When puberty is achieved in girls, which one of the following occurs in them but not in boys?

Punjab Mock 2
Biology
Reproduction
Reproduction in Females
A) Excessive growth of hairs on skin
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B) Pubic hair growth
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C) Menarche
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D) Heaviness of voice
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Gonadotropin-releasing hormone is secreted by:

Punjab Mock 2
Biology
Coordination and Control
Endocrine System and its Hormones
A) Hypothalamus
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B) Pitutary gland
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C) Thyroid
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D) Parathyroid gland
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A man receives his X chromosome from:

Punjab Mock 2
Biology
Variation and Genetics
Sex Determination
A) His mother only
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B) Part from his father and part from his mother
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C) His father only
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D) Either his mother or his father, It depends upon luck
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Which of the following is the separation point between two sarcomere?

Punjab Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) H-zone
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B) A-band
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C) Z-line
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D) M-line
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Optimum pH for salivary amylase Is:

Punjab Mock 2
Biology
A) 2
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B) 6.8
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C) 7.6
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D) 9
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Change in the frequency of alleles at a locus that occurs by chance is called:

Punjab Mock 2
Biology
Evolution
A) Genetic drift
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B) Mutation
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C) Emmigration
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D) Immigration
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For sterilization purposes, generally, X-rays are used which cause:

Punjab Mock 2
Biology
Kingdom Prokaryote
Importance and Control of bacteria
A) Mutation in bacterial genome
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B) Denaturation of bacterial proteins
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C) Activation of bacteria
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D) Bacteria to become pathogen
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The HIV genetic information flows from viral _______, and used to form viral _________.

Punjab Mock 2
Biology
Bio-diversity | Variety of Life
A) RNA to DNA: RNA and protein
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B) DNA to RNA: DNA and protein
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C) DNA to RNA : RNA and protein
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D) RNA to protein : RNA and protein
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The quantitative study of energy relationship in a biological system is called?

Punjab Mock 2
Biology
Bioenergetics
A) Bioenergetics
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B) Biochemistry
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C) Biotechnology
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D) Biophysics
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Which of the following number of chromosomes are present in the somatic cells of Drosophila?

Punjab Mock 2
Biology
Variation and Genetics
A) 4
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B) 8
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C) 16
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D) 2
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Which one of the following occurs at puberty in boys?

Punjab Mock 2
Biology
Reproduction
Reproduction in Males
A) Ovulation
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B) Pubic hair growth
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C) Hips broaden
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D) Menarche
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Glucose and Ribose form ring structures when:

Punjab Mock 2
Biology
Biological Molecules
Carbohydrates
A) React with an appropriate enzyme
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B) Dissolved in water
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C) Immersed in oil
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D) They are in crystalline state
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Among the following, identify the agranulocytes:

Punjab Mock 2
Biology
Transport
A) Neutrophils
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B) Basophils
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C) Monocytes
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D) Both Neutrophils and Basophils

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Lock and Key model ws explained by:

Punjab Mock 2
Biology
A) Koshland
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B) Emil Fischer
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C) De Duve
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D) De Duve
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Which of these Is the right combination of molecules which make up the secondary cell wall In plant cells?

Punjab Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Cellulose, lignin, and xylem
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B) Cellulose, hemicellulose, and lignin
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C) Cellulose only
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D) Cellulose, hemicellulose, and pectin

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Only one compound is neutral, the others are reactive. Point the one

Punjab Mock 2
Biology
Biological Molecules
A) cytoplasm
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B) HCl
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C) Urine
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D) Pure water
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Mendel’s idea that pair of characters separate during gamete formation is called:

Punjab Mock 2
Biology
Variation and Genetics
Mendelian Inheritance
A) Law of particulate inheritance
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B) Law of segregation
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C) Law of dominance
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D) Law of independant assortment
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To reduce one molecule of O2, _ _ _ electron(s) must be passed through the electron transport chain and _ _ _ molecule(s) of NADH ls(are) oxidized

Punjab Mock 2
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) 1:1
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B) 4:4
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C) 1:2
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D) 4:2
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What is the mass in grams of 1.69 moles of phosphoric acid?

Punjab Mock 2
Chemistry
Introduction to Fundamental Concepts of Chemistry
Analysis of a Compound – Empirical And Molecular Formulas
A) 148g
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B) 138g
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C) 157g
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D) 166g
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____________ is the structure in female reproductive system in which fertilization takes place:

Punjab Mock 2
Biology
Reproduction
Reproduction in Females
A) Ovaries
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B) Uterus
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C) Cervix
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D) Oviduct
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Name the inhibitors which can be neutralized by adding more substrate:

Punjab Mock 2
Biology
A) Competitive Inhibitors
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B) Permanent inhibitors
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C) Non-competitive inhibitors
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D) Irreversible inhibitors
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In sundew the leaves:

Punjab Mock 2
Biology
Nutrition
Heterotrophic Nutrition
A) Form flask shaped structure
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B) Bllobed structure with midrib
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C) Have hair like tentacles
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D) Have nodes
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Which of the following nutrient is mainly provided by insects feeding to carnivorous plants?

Punjab Mock 2
Biology
Nutrition
Heterotrophic Nutrition
A) Magnesium
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B) Nitrogen
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C) Carbon
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D) Oxygen
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Major component of bacterial cell wall is:

Punjab Mock 2
Biology
Kingdom Prokaryote
A) teichoic acid
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B) cartenoid
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C) chitin
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D) murein
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What is the meaning of articulation?

Punjab Mock 2
Biology
Support and Movement
A) Connections between Joints
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B) Connections between cartilages
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C) Connections between bones
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D) Connections between muscles
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Give the general formula of monosaccharides and polysaccharides.

Punjab Mock 2
Biology
Biological Molecules
Carbohydrates
A) (CH2O)n and Cn(H2O)2n
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B) (CH2O)2n and Cn(H2O)n

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C) (CH2O)n and Cn(H2O)n-1

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D) (CH2O)n-1 and Cn(H2O)n+1
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The alternative form of a given gene is called:

Punjab Mock 2
Biology
Variation and Genetics
Mendelian Inheritance
A) Trait
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B) Phenotype
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C) Allele
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D) Genotype
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A type of blood cell that produces heparin is ___________

Punjab Mock 2
Biology
A) Basophil
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B) Neutrophil
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C) Eosinophil
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D) Monocyte
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The antibody molecule consists of __________ polypeptide chains:

Punjab Mock 2
Biology
A) Eight
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B) Four
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C) Six
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D) Two
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The osmotic pressure of blood Is maintained by:

Punjab Mock 2
Biology
Transport
A) Membrane proteins
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B) Fibrous proteins
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C) Plasma proteins
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D) Myosln
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Which statement correctly outlines the reason for divergent evolution hypothesis of echinoderms and hemichordates?

Punjab Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Blastopore forms the anus
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B) They are both aquatic
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C) They have a well developed circulatory system
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D) They have dorsal nerve cord
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Which of these is a type of arthritis that Is primarily due to aging?

Punjab Mock 2
Biology
Support and Movement
A) Septic arthritis
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B) Rheumatoid arthritis
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C) Osteoarthritis
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D) Rheumatoid and oesteoarthritis
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Saccoglossus belongs to which group of invertebrates?

Punjab Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Porifera
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B) Cnidaria
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C) Echindermata
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D) Hemichordates
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Nitrifying bacteria belong to following group:

Punjab Mock 2
Biology
Kingdom Prokaryote
Motility and Nutrition in Bacteria
A) Chemosynthetic
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B) Photosynthetic
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C) Parasitic
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D) Pathogenic
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Golgl complex was discovered by which scientist?

Punjab Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Robert Brown
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B) Camillo Golgi
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C) De Duve
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D) Robert Hooke
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Size of virus ranges in:

Punjab Mock 2
Biology
Bio-diversity | Variety of Life
A) 20 to 250 nm
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B) 25 to 250 nm
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C) 25 to 300 nm
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D) 20 to 300 nm
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Protein factories In prokaryotlc cell are:

Punjab Mock 2
Biology
Kingdom Prokaryote
A) mesosomes
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B) Ribosomes
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C) Plasmids
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D) Nucleotide
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The photosensitive cells present in the retina that are sensitive to dim light are called?

Punjab Mock 2
Biology
Coordination and Control
Coordination in Animals
A) Optic disc
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B) Rods
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C) Cones
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D) Ligaments
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Chlorosis in plants is basically due to lack of:

Punjab Mock 2
Biology
Nutrition
A) Magnesium or nitrogen
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B) Carbon or Hydrogen
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C) Magnesium or iron
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D) Bright sunlight
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According to Hardy-Weinberg theorem, the sum of recessive and dominant gene frequencies is equal to:

Punjab Mock 2
Biology
Evolution
A) Gene pool of the the trait in the population
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B) Population density
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C) Total number of heterozygotes
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D) Total number of homozygotes
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The palmitic acid melts at _____

Punjab Mock 2
Biology
Biological Molecules
Lipids
A) 8 C
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B) 72 C
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C) 63.1 C
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D) 7 C
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A diseased man marries a normal woman.They have five daughters and three sons.All the daughters were diseased and sons were normal. The gene of this disease is:

Punjab Mock 2
Biology
Variation and Genetics
Sex Linkage
A) X linked dominant
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B) X-linked recessive
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C) Autosomal recessive
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D) Autosomal dominant
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The disorder in which one or more muscle groups face the full loss of function is called?

Punjab Mock 2
Biology
Support and Movement
Disorders of Skeleton
A) Cirrhosis
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B) Angina
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C) Epilepsy
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D) Paralysis
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Which features Identify deuterostomes?

Punjab Mock 2
Biology
Kingdom Animalia
A) Blastopore makes the mouth.
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B) Zygote divides splrally.
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C) Mesoderm forms from the developing no gut
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D) Fate of each blastomere Is pre-determined
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Diffused nervous system is present In which animal group?

Punjab Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Platyhelminthes
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B) Annelida
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C) Cnidaria
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D) Porifera
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Which is incorrect for cardiac muscles?

Punjab Mock 2
Biology
Transport
A) Show involuntary control
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B) Branched cells
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C) Have no striations
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D) Have intercalated disc
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The tertiary structure of protein indicates its:

Punjab Mock 2
Biology
Biological Molecules
Proteins
A) Chemical function
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B) Biological function
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C) Physical appereance
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D) characterstics
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Which of the following invertebrate phylum consists of the most abundant species on planet Earth:

Punjab Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Porifera
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B) Cnidaria
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C) Arthropoda
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D) Mollusca
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Which of the following was the first virus to be isolated and studied under the electron microscope:

Punjab Mock 2
Biology
Bio-diversity | Variety of Life
A) HIV
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B) Rabies Virus
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C) Pox Viruses
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D) TMV
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Which of the following provides resistance against high temperature?

Punjab Mock 2
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Cysts
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B) Spores
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C) Cell wall
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D) Capsules
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Elastic fibres are absent in the walls of __________

Punjab Mock 2
Biology
A) Aorta
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B) Arteries
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C) Veins
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D) Both options A and B
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Physical appearance of a trait is called:

Punjab Mock 2
Biology
Variation and Genetics
Mendelian Inheritance
A) Genotype
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B) Alleles
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C) Phenotype
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D) Genome
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Which of the following chemical activity is involved in the conversion of pyruvate into acetaldehyde during anaerobic respiration?

Punjab Mock 2
Biology
Bioenergetics
Anaerobic Respiration
A) Reduction
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B) Decarboxylation
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C) Oxidation
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D) Phosphorylation
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Which of the following is the most suitable term for the genotype AaBb

Punjab Mock 2
Biology
Variation and Genetics
Mendelian Inheritance
A) Homozygous recessive
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B) Homozygous dominant
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C) Heterozygous
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D) Heterozygous dominant
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Poxviruses are:

Punjab Mock 2
Biology
Bio-diversity | Variety of Life
A) Double stranded DNA virus
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B) Single stranded RNA virus
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C) Single stranded DNA virus
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D) Protein virus
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Which of the following Is a circular, double stranded DNA molecules present in some bacterial cells?

Punjab Mock 2
Biology
Kingdom Prokaryote
A) nucleoid
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B) Plasmids
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C) mesosomes
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D) Chromosomes
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Incomplete or Imperfect digestion Is called:

Punjab Mock 2
Biology
Nutrition
A) anorexia
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B) botulism
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C) bulimia nervosa
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D) Dyspepsia
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Low partial pressure of oxygen in tissues favours __________ of oxyhaemoglobin

Punjab Mock 2
Biology
Transport
A) Dissociation
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B) Formation
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C) Stability
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D) Transformation
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When a neuron’s membrane potentials is between – 70 mV and – 90 mV, it is said to be In a state of:

Punjab Mock 2
Biology
Coordination and Control
A) Depolarization
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B) hyperpolarization
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C) repolarization
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D) No polarization
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The origin of new species from already existing species over a period of time Is called:

Punjab Mock 2
Biology
Evolution
A) adaptation
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B) Evolution
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C) Neo.Darwinsm
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D) Special creation
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Phenotype represents:

Punjab Mock 2
Biology
Variation and Genetics
A) Physical appereance of the trait
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B) Genetic makeup of the trait
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C) Normal trait
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D) Mutant trait
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The protoplast of a plant cell does not include:

Punjab Mock 2
Biology
Cell Structure and Function
Introduction to Cell and it’s theory
A) Cell wall
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B) Cell membrane
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C) Vacuoles
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D) Nucleus
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The reflexes such as vomiting, coughing, and sneezing are controlled by which of the following

Punjab Mock 2
Biology
Coordination and Control
Central Nervous System
A) Pons
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B) Cerebrum
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C) Cerebellum
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D) Medulla oblongata
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Many sarcomere placed end to end and form a:

Punjab Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Muscle
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B) Fiber
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C) Myofibril
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D) Muscle fiber
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Evolution is the process that demostrates:

Punjab Mock 2
Biology
Evolution
A) how characters are passed from one generation to the next
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B) How organisms perform their activities in different environment
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C) How new species originate from existing species
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D) How new species are formed specially and specifically by the nature
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Albinism is an autosomal recessive trait. A woman with albino father marries an albino man. What Is the probability of albinism in her children?

Punjab Mock 2
Biology
Variation and Genetics
Inherited Diseases
A) 25%
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B) 50%
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C) 75%
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D) 100%
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The disorder which is caused when cones cannot distinguish between different colors is called?

Punjab Mock 2
Biology
Coordination and Control
Disorders of the Nervous System
A) Short sighted vision disorder
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B) Night blindness
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C) Long sighted vision disorder
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D) Color blindness
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Proliferative phase is also termed as:

Punjab Mock 2
Biology
Reproduction
Reproduction in Females
A) Secretory phase
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B) Menstruations phase
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C) Follicular or preoculatory phase
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D) Secondary phase
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One map unit is supposed to be equal to:

Punjab Mock 2
Biology
Variation and Genetics
A) 1%recombination frequency
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B) 5%recombination frequency
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C) 10%recombination frequency
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D) 15%recombination frequency
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Number of molecules possessing Ea (Activation Energy) can be increased by

Punjab Mock 2
Chemistry
Reaction Kinetics
A) Adding a catalyst
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B) increasing the volume
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C) increasing temperature
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D) increasing temperature of Moles of Reactants
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The maximum number of electrons which can be accommodated in all orbital for which I=3 is:

Punjab Mock 2
Chemistry
Atomic Structure
A) 6
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B) 14
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C) 10
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D) 18
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The value of acceleration due to gravity:

Punjab Mock 2
Physics
Forces and Motion
A) Is same on equator and poles
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B) Is least on poles
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C) Is least on equator
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D) Increases from pole to equator
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Which subshells are present In M shell?

Punjab Mock 2
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) s
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B) s, p
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C) s, p, d
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D) s, p, d, f
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Which of the following is the correct demonstration of the first law of thermodynamics?

Punjab Mock 2
Chemistry
Thermochemistry
Laws of Thermodynamics
A) ΔH=qw
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B) ΔH=q-ΔPΔV
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C) ΔH=q+w
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D) Q= E+W

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Which of the following solid has indefinite heat of fusion?

Punjab Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Crystalline solids
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B) Pure solids
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C) True solids
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D) Amorphous solids
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What Is the unit of slope obtained from Arrhenius equation?

Punjab Mock 2
Chemistry
Reaction Kinetics
A) K
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B) J/mol K
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C) mol/K
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D) K-
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The reaction in which rate depends only on one reactant concentrations, although more than one reactants are present in the reaction mixture is known as __________

Punjab Mock 2
Chemistry
Reaction Kinetics
Order of reaction and its determination
A) 1st order reaction
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B) 2nd order reaction
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C) Pseudo first order reaction
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D) Third order reaction
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The shape of s-orbital is ______ and the shape of p-orbital is _______.

Punjab Mock 2
Chemistry
Atomic Structure
Experiments in Atomic Struture
A) Spherical, dumb-bell
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B) Dumb-bell, spherical
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C) Spherical, double dumb-bell
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D) Spherical, spherical
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Which one of the following is a strong nucleophile:

Punjab Mock 2
Chemistry
Alkyl Halides and Amines
A) Cl-
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B) Br-
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C) OH-
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D) HSO4-
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Which of the following products is formed by the reaction of aluminium with nitrogen?

Punjab Mock 2
Chemistry
s and p Block Elements
A) AlN3
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B) AlN
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C) Al2N2
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D) Al3N2
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Unit of K in first order Reaction is:

Punjab Mock 2
Chemistry
Reaction Kinetics
Order of reaction and its determination
A) s-1
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B) moles dm-3 s-1
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C) moles dm-3
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D) mol-1 dm3’
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Ali punches a mattress and then punches a wall with the same force. Why does Ali experience more pain while striking the wall?

Punjab Mock 2
Physics
Forces and Motion
A) The rate of change of momentum while striking the wall is lower
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B) The rate of change of momentum while striking the wall is higher
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C) The wall does not move
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D) The mattress applies an equal and opposite force
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Pi (π) bond between two atoms is

Punjab Mock 2
Chemistry
Chemical Bonding
VSEPR Theory
A) Formed by axial overlapping of atomic orbitals, and is stronger than sigma bond.
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B) Formed by parallel overlapping of atomic orbitals, and is stronger than sigma bond.
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C) Formed by axial overlapping of atomic orbitals, and is weaker than sigma bond.
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D) Formed by parallel overlapping of atomic orbitals, and is weaker than sigma bond.
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For a particular reversible reaction If [Products]/[Reactants]>Kc It means that:

Punjab Mock 2
Chemistry
Chemical Equilibrium
Reversible and Irreversible Reactions
A) More products are needed to attain equillbrium
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B) There are more reactants in the system
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C) More Reactants are needed to attain equillbrium
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D) The reaction will move forward to attain equilibrium
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Shielding effect in 3rd period of periodic table:

Punjab Mock 2
Chemistry
s and p Block Elements
General Behaviour of Alkali and Alkaline Earth Metals
A) Increases from left to right.
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B) Decreases from left to right.
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C) May increase or decrease
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D) Remain unchanged
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Which of these has a bond length of ______ 174 pm?

Punjab Mock 2
Chemistry
Chemical Bonding
A) C-C
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B) Cl-Cl
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C) Cl-H
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D) C-Cl
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Force is a:

Punjab Mock 2
Physics
Forces and Motion
A) Vector
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B) Scalar
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C) Tensor
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D) Base quantity
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Which of the following undergoes sulfonation the fastest?

Punjab Mock 2
Chemistry
Hydrocarbons
A) Benzene
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B) Chlorobenzene
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C) Nitrobenzene
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D) Toluene
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In the gaseous phase, when ionization takes place ____________ are isolated and are free from all external influences:

Punjab Mock 2
Chemistry
Atomic Structure
A) Atoms and molecule
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B) Atom and cation
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C) Atom and anion
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D) Atom and ion
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A compound of boron and hydrogen contains 18.9% hydrogen and 81.1% boron. The empirical formula of the compound is:

Punjab Mock 2
Chemistry
Introduction to Fundamental Concepts of Chemistry
A) BeH2
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B) Be2H
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C) B4H
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D) B2H5
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The carbanion attacks the molecule of another carbonyl compound to form:

Punjab Mock 2
Chemistry
Aldehydes and Ketones
A) an alkoxide group
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B) aldol
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C) a carbanion
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D) a carbonium ion
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lodoform test is used to check the presence of:

Punjab Mock 2
Chemistry
Aldehydes and Ketones
Reactivity and Reactions of Carbonyl Group
A) Amines
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B) Carbonyl compounds
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C) Carboxylic acid
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D) Alkyl halides
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In the air, N2 and O2 occur naturally but they do not react to form oxides of nitrogen because

Punjab Mock 2
Chemistry
s and p Block Elements
General Behaviour of Alkali and Alkaline Earth Metals
A) Oxides of nitrogen are unstable
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B) Catalyst is required tor the reaction
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C) The reaction is endothermic
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D) N2 and O2 do not react with each other
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In NO3- the oxidation number of N is:

Punjab Mock 2
Chemistry
Electrochemistry
A) 5+
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B) 2+
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C) 3+
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D) -3
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The C-C bond length in benzene is:

Punjab Mock 2
Chemistry
Hydrocarbons
A) 1.39 Angstrom
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B) 1.20 Angstrom
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C) 1.34 Angstrom
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D) 1.54 Angstrom
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The properties which depends upon the direction are called:

Punjab Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Isotropic properties
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B) Anisotropic properties
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C) Additive properties
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D) Colligative properties
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Ksp (Solubility product) depends upon:

Punjab Mock 2
Chemistry
Chemical Equilibrium
Solubility Product and Precipitation Reactions
A) Pressure
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B) Concentration
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C) Temperature
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D) Volume
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When body moves in a circle _______ always changes:

Punjab Mock 2
Physics
Circular Motion & Momentum
A) Velocity
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B) Acceleration
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C) Mass
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D) Force
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Major product of the following reaction is: CH2=CH-CH2-CH3 + HBr

Punjab Mock 2
Chemistry
Hydrocarbons
Alkenes
A) CH2(Br)-CH2-CH2-CH3
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B) CH3-CH(Br)-CH2-CH3
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C) CH2=CH-CH(Br)-CH3
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D) CH2=CH-CH2-CH2(Br)
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Which of the following substances has the highest intermolecular forces of attraction?

Punjab Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
A) H2O
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B) H2S
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C) H2Se
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D) H2Te
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The transition element which shows fixed 2+ oxidation state in its compound is:

Punjab Mock 2
Chemistry
d and f Block Elements
A) Zn
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B) Fe
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C) Cu
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D) Mn
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Which one of the following is calculated from balanced equation during the determination of limiting reactant?

Punjab Mock 2
Chemistry
Introduction to Fundamental Concepts of Chemistry
A) Amount of reactants present
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B) Amount of limiting reactant that produces·the product
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C) Amount of product expected to form from each reactant
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D) Amountof excess reactant
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Which one of the following is called as compressibility factor?

Punjab Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
A) PV=nRT
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B) PV/nRT
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C) PV/RT=n
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D) PV/T=Rn
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Aldehyde common names are derived from carboxylic acid names with the same number of:

Punjab Mock 2
Chemistry
Aldehydes and Ketones
A) Hydrogen atoms
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B) Carbon atoms
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C) Oxygen atoms
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D) Carbon and hydrogen atoms
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What is the reason that ice at 0˚ occupies more volume than water:

Punjab Mock 2
Chemistry
States of Matter
A) Empty spaces
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B) Ionic bond
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C) Intermolecular
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D) Debye forces
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Fe is precipitated out when Mg strip is dipped in

Punjab Mock 2
Chemistry
d and f Block Elements
A) FeSO4 solution
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B) CuSO4 Solution
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C) MgSO4 Solution
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D) H2SO4 solution
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Which of the following orbitals has lower energy?

Punjab Mock 2
Chemistry
Atomic Structure
A) Anti-bonding molecular orbital
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B) Anti-bonding atomic orbitals
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C) Bonding half-filled orbitals
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D) Bonding molecular orbital
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The breaking of large molecules by heating at high temperature and pressure is called:

Punjab Mock 2
Chemistry
Fundamental Principles of Organic Chemistry
A) Reforming
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B) Steam cracking
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C) Catalytic cracking
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D) Thermal cracking
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2-chlorobutane belongs to:

Punjab Mock 2
Chemistry
Alkyl Halides and Amines
A) Primary Alkyl halides
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B) Secondary Alkyl halide
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C) Tertiary alkyl halides
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D) Quarternary alkyl halides
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The increase in probability of hydroxides of alkaline metals increase down the group due to low:

Punjab Mock 2
Chemistry
s and p Block Elements
A) Ionic size
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B) Atomic size
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C) Decrease in lattice energy
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D) Hydration energy
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The termination step in the halogenation of alkanes in the presence of sunlight involves the formation of:

Punjab Mock 2
Chemistry
Hydrocarbons
A) Free radicals
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B) Cations
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C) Anions
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D) Molecules
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Acetone is less reactive than acetaldehyde due to:

Punjab Mock 2
Chemistry
Aldehydes and Ketones
Physical Properties of Aldehydes And Ketones
A) More Stearic hindrance offered by its methyl groups.
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B) Electron withdrawing nature of its methyl groups.
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C) Its Carbonyl carbon is sp2 hybridized.
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D) Oxygen of carbonyl group is more electronegative than carbon atom.
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Among the following, which compound is formed by addition polymerization:

Punjab Mock 2
Chemistry
Hydrocarbons
A) Polystyrene
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B) Polyester
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C) Nylon
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D) Both Polystyrene & Polyester
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Which of the following postulate of kinetic molecular theory does NOT hold at high temperature and pressure?

Punjab Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Kinetic Molecular Theory Of Gases
A) Gases are considered to be composed of minute discrete particles called molecules.
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B) The molecules move in straight line.
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C) The pressure of gas is produced due to the collision of molecules with the wall of container.
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D) The volume occupied by the gas molecules is negligible as compared to the the total volume of the gas.
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Which of the following fraction of petroleum has lowest boiling point at STP.

Punjab Mock 2
Chemistry
Fundamental Principles of Organic Chemistry
Introduction to Fundamental Principles of Organic Chemistry
A) Kerosene oil
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B) Lubricating oil
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C) Gasoline
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D) Diesel oil
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The basic hydrolysis of ethyl acetate produces?

Punjab Mock 2
Chemistry
Carboxylic Acids and its Derivatives
A) Ethanol and sodium acetate
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B) Ethanol and acetic acid
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C) Ethanol
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D) Formic acid
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The projectile motion covers maximum range:

Punjab Mock 2
Physics
Forces and Motion
Motion in Two Dimensions
A) Horizontally
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B) Vertically
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C) Tangentially
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D) Linearly
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Oxidation number of a substance in elemental form is:

Punjab Mock 2
Chemistry
Electrochemistry
Oxidation Number or State
A) 0
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B) Positive
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C) Negative
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D) Fractional
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Melting point of Na & Mg decreases down the group due to:

Punjab Mock 2
Chemistry
s and p Block Elements
Introduction to s and p Block Elements
A) Strong electronegativity
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B) Strong attractive forces
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C) Increment in size
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D) High Ionization Energy
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Which solids are also called as atomic solids?

Punjab Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
A) Ionic solids
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B) Covalent solids
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C) Molecular solids
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D) Metallic solids
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The amount of energy required to beak one mole of a particular type of bond is equal to its:

Punjab Mock 2
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
A) Activation energy
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B) Ionization energy
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C) Bond Energy
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D) Potential energy
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Which of the following reactions are given by alcohol and phenol both?

Punjab Mock 2
Chemistry
Alcohol, Phenols, and Ethers
A) Esterification
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B) Nitrosation
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C) Amide formation
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D) Lucas Reaction
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Who named the positive rays produced by the hydrogen gas in discharge tube?

Punjab Mock 2
Chemistry
Atomic Structure
A) Goldstein
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B) Rutherford
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C) Bohr
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D) Chedwick
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Which of the following is true about newton’s laws of motion?

Punjab Mock 2
Physics
Forces and Motion
A) One of them is not related to forces
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B) Two of them are not related to forces
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C) All of them are related to forces
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D) One of them is related forces
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Salts of carboxylic acids can be converted into corresponding carboxylic acid by treating with:

Punjab Mock 2
Chemistry
Carboxylic Acids and its Derivatives
A) Water
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B) Base
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C) Acid anhydrides
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D) Acid
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Identify the element that has maximum oxidation states:

Punjab Mock 2
Chemistry
d and f Block Elements
A) Zinc
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B) Chromium
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C) Vanadium
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D) Manganese
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The array of points which shows the atoms ions or molecule arrangements in a crystal is called.

Punjab Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Crystal Lattice and Lattice Energy
A) Crystal system
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B) Crystal lattice
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C) Crystal array
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D) Crystallography
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Mass of electron _______ times smaller than that of proton.

Punjab Mock 2
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) 1837
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B) 1839
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C) 1836
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D) 1834
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What is the relationshlp between the half life of a radioactive isotope and its wavelength?

Punjab Mock 2
Physics
Nuclear Physics
A) they are equal in magnitude
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B) they are directly proportional
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C) they are inversely proportional
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D) No relation
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The velocity of sound in vacuum at 0 C:

Punjab Mock 2
Physics
Wave Motion and Sound
A) 332 m/s
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B) 344 m/s
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C) 330 m/s
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D) 0
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The formula to estimate P.E is:

Punjab Mock 2
Physics
Work, Power & Energy
A) F.d
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B) mgh
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C) kx
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D) mvr
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The engine of vehicle delivers constant power and moves up on the inclined plane, then its velocity:

Punjab Mock 1
Physics
Work, Power & Energy
A) Must remain constant
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B) Must increase
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C) Must decrease
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D) Remains zero
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Earth revolution In 24 hours covers _____ angle:

Punjab Mock 2
Physics
Circular Motion & Momentum
A) 90
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B) 60
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C) 57.3
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D) 360
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Current is ______ physical quantity

Punjab Mock 2
Physics
Current Electricity
A) scalar quantity
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B) vector quantity
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C) variable quantity
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D) constant quantity
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A body is undergoing non uniform circular motion, work done by radial force on the body:

Punjab Mock 2
Physics
Circular Motion & Momentum
A) Positive
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B) Zero
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C) Negative
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D) Variable
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Consider an isolated parallel plate capacitor. Both plates have charge +Q and -Q and filled with a dielectric with dielectric constant K. We pull out the dielectric material, if the charges on the plates do not change, how does the energy in the capacitor changes?

Punjab Mock 2
Physics
Electrostatics
A) It increases
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B) It decreases
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C) It remains constant
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D) Insufficient data
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A three dimensional image is obtained by scanning the surface with a focused beam of electrons:

Punjab Mock 2
Physics
Atomic Spectra
A) SEM
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B) TEM
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C) X-ray
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D) STEM
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X rays are also known as:

Punjab Mock 2
Physics
Atomic Spectra
A) Low energy invisible photons
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B) High energy visible photons
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C) High energy invisible photons
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D) Low energy visible photons
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Ohm’s Law is applicable only when temperature is:

Punjab Mock 2
Physics
Current Electricity
A) changing
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B) absolute zero
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C) constant
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D) decreasing
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The property of musical sound which differentiate between grave and shrill sound is called?

Punjab Mock 2
Physics
Wave Motion and Sound
A) Pitch
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B) Intensity
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C) Beats
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D) Quality
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An object travelling in a circle at 2 revolutions per second has an angular velocity of:

Punjab Mock 2
Physics
Circular Motion & Momentum
A) 12.9 rad/s
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B) 13.3 rad/s
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C) 12.6 rad/s
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D) 14.6 rad/s
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When coil is rotated in magnetic field, the current produced is:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A.C. and D.C. Generator
A) Constant
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B) Decrease
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C) Increase
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D) Continuously changing
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Electric Flux through the surface of a sphere which has constant charge at its centre depends on:

Punjab Mock 2
Physics
Electrostatics
A) The radius of the sphere
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B) The surface area of the sphere
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C) The amount of charge inside the sphere
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D) The amount of charge outside the sphere
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Transformer can convert _________

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
Transformers
A) Low DC voltage
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B) High DC voltage
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C) Battery voltage
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D) AC voltage
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In a step down transformer, the current in the secondary coil is _ _ the current in the primary coil:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A) Equal to
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B) Less than
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C) Greater than
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D) Unchanged
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The self inductance of a coil does not depend upon:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A) length
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B) current
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C) the number of turns
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D) the area of the coil
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In annihilation process particles move in:

Punjab Mock 2
Physics
Dawn of Modern Physics
A) Same direction
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B) Opposite direction
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C) Perpendicular direction
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D) Remain stationary
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Radian can be used to measure:

Punjab Mock 2
Physics
Circular Motion & Momentum
A) length of line
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B) Diameter of circle
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C) side of traingle
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D) arc length
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Eddy currents flow in:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
Transformers
A) Open loops
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B) Closed loops
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C) Straight lines
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D) Vertlcal loops
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Pitch depends on:

Punjab Mock 1
Physics
Wave Motion and Sound
A) Frequency
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B) Timbre
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C) loudness
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D) amplitude
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If the current in a wire is doubled then magnetic field would be:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A) halved
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B) remain same
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C) triple
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D) double
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Which of the following could not be the units of electric intensity?

Punjab Mock 2
Physics
Electrostatics
A) Joule per coulomb per meter
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B) Joule per coulomb
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C) Volt per meter
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D) Newton per coulomb
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Which equation represents the maximum output power of source?

Punjab Mock 2
Physics
Work, Power & Energy
A) P = VI
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B) P = I2R
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C) P = V2/R
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D) P = E2/4R
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Resistance of a conductor depends upon:

Punjab Mock 2
Physics
Current Electricity
A) Temperature
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B) Nature of a conductor
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C) Length
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D) Color
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Water waves are:

Punjab Mock 2
Physics
Wave Motion and Sound
A) Longitudinal waves
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B) Complex waves
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C) Transverse waves
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D) Both longitudinal and transverse wave
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When gamma photon is entered in nucleus it __________:

Punjab Mock 2
Physics
Nuclear Physics
Radioactivity
Biological Effects and Uses of Radiation
A) De-excite the nucleus
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B) Excites the nucleus
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C) Scattered by nucleus
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D) No effect on nucleus
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____ potential difference is required for establishing steady current?

Punjab Mock 2
Physics
Current Electricity
A) Minimum
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B) Constant
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C) Maximum
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D) Varying
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A full wave rectifier passes _________ into positive cycles:

Punjab Mock 2
Physics
Electronics
Rectification
A) Lower half cycle
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B) Upper half cycle
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C) Both lower and upper half cycles
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D) One quarter cycle
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The change in potential energy per unit charge between two points in an electric field is called:

Punjab Mock 2
Physics
Electrostatics
A) Potential difference
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B) Absolute potential
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C) Electric Intensity
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D) Permitivity
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If the force of 20 N acts at an angle 60 degree along horizontal then its vertical and horizontal components are:

Punjab Mock 2
Physics
Forces and Motion
A) 20 N, 0 N
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B) 15 N, 10 N
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C) 17.32 N, 10 N
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D) 10 N, 17.32 N
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If Cp = 20 J/mol.K then for 1 mole gas we get Cv= _______. You can use Cp/Cv = 1.7.

Punjab Mock 2
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) 10.6 J/K.mole
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B) 2.7 J/K.mole
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C) 13 J/K.mole
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D) 11.7 J/K.mole

Minimum value of kinetic energy is:

Punjab Mock 2
Physics
Work, Power & Energy
A) Infinite
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B) Zero
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C) Negative constant
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D) Minus infinite
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An ordinary TV screen made of cathode tube emits:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A) Cathode rays
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B) Anode rays
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C) Gamma rays
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D) None of the above options
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Microwave is:

Punjab Mock 2
Physics
Electromagnetic Waves
A) An electromagnetic wave
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B) Sound wave
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C) Longitudinal wave
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D) Standing wave
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Example of mechanical waves is:

Punjab Mock 2
Physics
Wave Motion and Sound
A) Transverse wave
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B) Longitudinal wave
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C) Both transverse and longitudinal wave
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D) Compressional waves
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Unit of heat capacity is:

Punjab Mock 2
Physics
Heat and Thermodynamics
A) J/K
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B) J/K.mole
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C) J/K.kg
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D) Joule
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Molar heat capacity at constant volume is given by:

Punjab Mock 2
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) dQ/dN
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B) dQ/dP
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C) dU/dT
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D) dU/dV
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Electric current may be defined as:

Punjab Mock 2
Physics
Current Electricity
A) Rate of flow of charge
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B) Rate of flow of momentum
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C) Rate of flow of power
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D) Rate of flow of energy
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The negative sign in Lenz’s law indicates that the induced emf opposes the rate of change of:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A) Electric flux
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B) Magentic flux
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C) Electric field
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D) Magentic field
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The study of magnets is called:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A) Electromagnetism
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B) Magnetism
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C) Electrostatics
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D) Current electricity
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When a bar magnet is broken from middle, the broken pieces will have:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
Amperes Law and Determination of Flux Density
A) North pole only
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B) Sooth pole only
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C) Both south and north poles
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D) Magnetism will be removed
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Transistors can be used as:

Punjab Mock 2
Physics
Electronics
A) Half-wave rectifier
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B) Full-wave rectifier
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C) Photocell
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D) Switch
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Among the following four spectral regions, which photon has the highest energy?

Punjab Mock 2
Physics
Atomic Spectra
A) Infrared
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B) Violet
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C) Blue
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D) red
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Electrical potential energy between two charges at distance “r” is given by:

Punjab Mock 2
Physics
Electrostatics
A) (k*q1*q2)/r
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B) (k*q1*q2)/r2
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C) k*q1*q2
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D) k*q1*q2/2r
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Magnetic field inside a long solenoid is:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
Amperes Law and Determination of Flux Density
A) Varying with radial distance
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B) Uniform
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C) Zero
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D) Not enough Information
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The magnetic flux density is:

Punjab Mock 2
Physics
Magnetism and Electromagnetic Induction
A) magnetic field lines per unit area
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B) magnetic field lines per unit volume
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C) electric field lines per unit area
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D) electric field lines per unit volume
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