When resources gets scarce, the population growth?

Balochistan Mock 4
Biology
Man and His Enviornment
A) Becomes fast
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B) Slows down
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C) Remains same
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D) None of these
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When both the alleles of a gene pair are same, the organism is said to be:

Balochistan Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) Heterozygous
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B) Genotype
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C) Homozygous
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D) Phenotype
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Which one of the following are “myogenic” type of muscles?

Balochistan Mock 4
Biology
Support and Movement
Types of Muscles
A) Glandular muscles
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B) Cardiac muscles
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C) Skeletal muscles
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D) Smooth muscles
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Which of the following statements about chordates is true?

Balochistan Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) They are protostomes
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B) All chordates are vertebrates
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C) They lack a coelom
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D) Their anus forms from the blastopore
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According to lvanovski, what are soluble living germs?

Balochistan Mock 4
Biology
Bio-diversity | Variety of Life
A) Bacteria
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B) Viruses
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C) Fungi
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D) Both A and B
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_____ alleles both have an effect on the phenotype of a heterozygous organism:

Balochistan Mock 4
Biology
Variation and Genetics
Exceptions To Mendelian Inheritance
A) Dominant
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B) Recessive
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C) Co-dominant
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D) Multiple
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Inactive enzyme precursors such as pepsinogen for pepsin are called as:

Balochistan Mock 4
Biology
A) Holoenzymes
Show Explanation
B) Actinases
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C) Zymogens
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D) Mucopolysaccharides
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Which of the following diseases is sexually transmitted?

Balochistan Mock 4
Biology
Bio-diversity | Variety of Life
A) Tuberculosis
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B) AIDS
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C) Dengue Fever
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D) Cholera
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In photosynthesis dark reaction, is called so because:

Balochistan Mock 4
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
A) It occurs in dark
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B) It does not require light energy
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C) It cannot occur during daytime
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D) It occurs more rapidly at night
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HDL is synthesized in;

Balochistan Mock 4
Biology
Transport
A) Liver
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B) Intestine
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C) Liver and Intestine
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D) Adipose tissue
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Which of the following wavelength is absorbed maximum for photosynthesis?

Balochistan Mock 4
Biology
Bioenergetics
Photosynthetic pigments
A) 660 nm
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B) 680 nm
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C) 440 nm
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D) 700 nm
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The term ‘cell’ was given by

Balochistan Mock 4
Biology
Cell Structure and Function
Introduction to Cell and it’s theory
A) Leeuwenhoek
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B) Robert Hooke
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C) Flemming
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D) Robert Brown
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When two or more clearly different phenotypes exists in same population of species, the phenomenon is called?

Balochistan Mock 4
Biology
Evolution
A) Replication
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B) Polymorphism
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C) Gene linkage
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D) Gene expression
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Which one of the following represents the changes that occur in the ovary and the uterus approximately every 28 days involving ovulation with the breakdown and loss of the lining of the uterus?

Balochistan Mock 4
Biology
Reproduction
Reproduction in Females
A) Ovulation
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B) Menstrual cycle
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C) Uterine cycle
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D) Embryo formation
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Coelom that develops from the archenteron as outpouching is?

Balochistan Mock 4
Biology
Kingdom Animalia
Classification according to Coelem
A) Pseudocoelom
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B) Schizocoelom
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C) Enterocoelom
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D) Both a and b
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If both the alleles are same with respect to genes, then they are called?

Balochistan Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) Heterozygous
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B) Unicellular
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C) Homozygous
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D) None of these
Show Explanation

Which statement correctly outlines some of the main events in photosynthesis?

Balochistan Mock 4
Biology
Bioenergetics
Introduction to Photosynthesis
A) A 5-Carbon carbohydrate accepts carbon dioxide and is then reduced by NADPH derived from photophosphorylation
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B) A 3-Carbon carbohydrate is regenerated and reduced by hydrogen molecules derived from photophosphorylation
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C) Photolysis uses light to produce reduced NADP and oxygen which are used to reduce a 3-Carbon carbohydrate
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D) Photolysis produces NADPH and ATP which are used to reduce a 5-Carbon carbohydrate
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For attachment, rabies virus binds to a

Balochistan Mock 4
Biology
Bio-diversity | Variety of Life
A) Complement receptor

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B) Integrin ICAM-1
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C) Acetylcholine
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D) Epidermal growth factor
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Which one of the following muscles are considered as “Voluntary muscles”?

Balochistan Mock 4
Biology
Support and Movement
Types of Muscles
A) Smooth muscles
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B) Cardiac muscles
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C) Skeletal muscles
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D) Glandular muscles
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The types of gametes produced by two pairs of chromosomes can be?

Balochistan Mock 4
Biology
Chromosomes and DNA
Types & Composition of Chromosomes
A) 2
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B) 4
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C) 6
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D) 8
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Among the followings which is the longest supportive cell?

Balochistan Mock 4
Biology
Support and Movement
Support and Movement in Animals
A) Trachea
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B) Collenchyma cells
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C) Sclereids
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D) Tracheids
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A type of bacterial cell that is completely surrounded by flagella is called:

Balochistan Mock 4
Biology
Kingdom Prokaryote
Motility and Nutrition in Bacteria
A) Diplococcus
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B) Tetrad
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C) Peritrichous
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D) Monotrichous
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A common polyhedral capsid shape of viruses is a?

Balochistan Mock 4
Biology
Bio-diversity | Variety of Life
A) Icosahedron
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B) Pentagon
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C) Cube
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D) Pyramid
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Which cells secrete flexible, elastic, non-living matrix collagen that surrounds the chondrocytes?

Balochistan Mock 4
Biology
Support and Movement
Support and Movement in Animals
A) Osteocytes
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B) Osteoclasts
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C) Chondrocytes
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D) Osteoblasts
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Proteins are the polymers of?

Balochistan Mock 4
Biology
Biological Molecules
Proteins
A) Amino acids
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B) Fatty acids
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C) Nucleotides
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D) None of these options is correct
Show Explanation

A _____ is a junction between two neurons or between a motor neuron and a muscle cell:

Balochistan Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Impulse
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B) Synapse
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C) Axon
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D) Cleft
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What do we call the cell surface membrane of a muscle fibre?

Balochistan Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Sarcolemma
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B) Plasma membrane
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C) Sarcoplasm
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D) Myofibrils
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Which body function is controlled through a positive feedback mechanism?

Balochistan Mock 4
Biology
Coordination and Control
Feedback Mechanism
A) Labor contractions
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B) Body temperature
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C) Insulin production
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D) Thyroxine release
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In humans, the temperature regulation control center is located in:

Balochistan Mock 4
Biology
Homeostasis
Thermoregulation
A) Kidneys
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B) Brain
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C) Lungs
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D) Liver
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The hinge joint and ball and socket joints are the types of

Balochistan Mock 4
Biology
Support and Movement
Types of Joints
A) Freely movable joints
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B) Slightly movable joints
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C) Immovable joints
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D) None of these
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Coccobacillus has a shape similar to which of the following?

Balochistan Mock 4
Biology
Kingdom Prokaryote
Shape of Bacteria
A) Rod
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B) Egg
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C) Ball
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D) None of these
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Which one is not the characteristic of Kingdom Animalia?

Balochistan Mock 4
Biology
Kingdom Animalia
Introduction to Kingdom Animalia
A) All animals are ingestive heterotrophs
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B) All animals are eukaryotes
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C) It is largest kingdom
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D) All animals develop from the dissimilar gametes
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Enzymes work by which of the following?

Balochistan Mock 4
Biology
A) Increasing the activation energy
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B) Reducing the activation energy
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C) Making exergonic reactions endergonic
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D) Making endergonic reactions exergonic
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Which of the following sections of a sarcomere does not shorten during contraction?

Balochistan Mock 4
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) I band
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B) H zone
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C) A band
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D) None of these
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Aquatic arthropods belonging to this class breathe through gills.

Balochistan Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Insects
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B) Arachnids
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C) Crustaceans
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D) Arachnids and crustaceans
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What is the strengthening material of the prokaryotic cell wall?

Balochistan Mock 4
Biology
Kingdom Prokaryote
Size and Structure of Bacteria
A) Cellulose
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B) Chitin
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C) Silica waxes and lignin
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D) Peptidoglycan or murein
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What is the major cell infected by the AIDS HIV Virus?

Balochistan Mock 4
Biology
Bio-diversity | Variety of Life
A) Lymphocytes
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B) Cancer cells
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C) Stem cells
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D) T lymphocytes
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Sycon is an example of:

Balochistan Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Platyhelminthes
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B) Annelida
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C) Protozoa
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D) Porifera
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Out of 31 pairs of spinal nerves, how many are pairs of coccygeal nerves?

Balochistan Mock 4
Biology
Coordination and Control
Central Nervous System
A) 1
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B) 12
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C) 15
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D) 10
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Salamander belongs to which of the following class?

Balochistan Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Pisces
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B) Aves
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C) Reptiles
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D) Amphibians
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What is critical in photoperiodism?

Balochistan Mock 4
Biology
Reproduction
Reproduction in Plants
A) Length of light period
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B) Length of dark period
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C) Both Options A and B are correct
Show Explanation
D) None of these options is correct
Show Explanation

Nicotinamide adenine dinucleotide is an example of:

Balochistan Mock 4
Biology
Biological Molecules
Nucleic Acids
A) Coenzymes
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B) Holoenzymes
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C) None of these
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D) Both of these
Show Explanation

What are the subunits of capsids?

Balochistan Mock 4
Biology
Bio-diversity | Variety of Life
A) Capsomeres
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B) Flagella
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C) Hyphae
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D) September
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In Anaerobic respiration, how much % of the energy, present within the chemical bond of glucose, is converted into ATP?

Balochistan Mock 4
Biology
Bioenergetics
Anaerobic Respiration
A) 2
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B) 4.5
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C) 5.6
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D) 7.7
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Which of these structures transports sperm from the testis to the penis?

Balochistan Mock 4
Biology
Reproduction
Reproduction in Males
A) Sperm duct
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B) Scrotum
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C) Urethra
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D) Gamete
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Which of the following is not associated with the process of respiration?

Balochistan Mock 4
Biology
Gaseous Exchange
Respiratory System of Man
A) Lungs
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B) Gills
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C) Bladder
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D) Trachea
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The upward movement of sap by the xylem is:

Balochistan Mock 4
Biology
Transport
A) Ascent of sap
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B) Plasmolysis
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C) Deplasmolysis
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D) Guttation
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Which of the following statement was not explained by Darwin’s theory?

Balochistan Mock 4
Biology
Evolution
A) The significance of minute variations
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B) Presence of vestigeal or useless organs
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C) The presence of over specialized organs
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D) All of the above
Show Explanation

The stretch reflex, the Golgi tendon reflex, the crossed extensor reflex, and the withdrawal reflex are included in:

Balochistan Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Stretch reflex
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B) Spinal reflex
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C) Golgi tendon reflex
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D) Crossed Extensor Reflex
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The active uptake of sodium in the ascending limb or thick loop of Henle is promoted by the action of:

Balochistan Mock 4
Biology
Homeostasis
Structure and Importance of the Kidney
A) Aldosterone
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B) Thyroxine
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C) ADH
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D) Cortisone
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Which one of the following is common to all neurons?

Balochistan Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) A cell body which contains a nucleus
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B) A thick myelin sheath
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C) Presence of node of Ranvier
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D) Presence of Schwann cells
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Which of the following neurotransmitters function, both as neurotransmitter and hormones, decreasing our perception of pain?

Balochistan Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Epinephrine
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B) Serotonin
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C) Dopamine
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D) Endorphins
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The radial symmetry is found in the animals of which of the following?

Balochistan Mock 4
Biology
Kingdom Animalia
Grade Radiata & Grade Bilateria
A) Protozoa
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B) Porifera
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C) Cnidaria
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D) All of these
Show Explanation

Neurons are cells adapted for the rapid transmission of electrical impulses. To do this, they have long thin processes called:

Balochistan Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Axons
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B) Dendrites
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C) Myelin sheath
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D) Schwann cell
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Which of the following is NOT a characteristic feature of tapeworm?

Balochistan Mock 4
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Each body segment has two sets of male and female reproductive organs.
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B) The digestive tract develops from endodermal cells in the embryo.
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C) The body can be cut into two parts, which are mirror images of each other, in one plane only.

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D) None of these
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The type of plastids found in the roots of plants are ________.

Balochistan Mock 4
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Chloroplasts
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B) Chromoplasts
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C) Leucoplasts
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D) All of these options are correct
Show Explanation

Which of these is a characteristic of prokaryotic cells?

Balochistan Mock 4
Biology
Kingdom Prokaryote
Taxonomy, Ecology & Diversity of Bacteria
A) Absence of membrane bound cell organelles
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B) Presence of 70S ribosomes
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C) Both Options A and B are correct
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D) None of these
Show Explanation

As long as two species occupy different niches, there is?

Balochistan Mock 4
Biology
Evolution
A) Competition
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B) No competition
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C) Gene linkage
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D) Polymorphism
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As an excretory organ, liver:

Balochistan Mock 4
Biology
Homeostasis
Excretion in Animals
A) Detoxifies many chemical poisons
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B) Breaks down ammonia for excretion by the kidneys
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C) Produces urea and uric acids from the nitrogen of amino acids
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D) All of the above
Show Explanation

What is an example of sperms of liverworts, mosses, ferns which move towards archegonia, in response to nucleic acid released by the ovum?

Balochistan Mock 4
Biology
Support and Movement
Support & Movement in Plants
A) Chemotropic movement
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B) Chemonastic movement
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C) Haptonastic movement
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D) Chemotactic movement
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The reduction of nitrile produced a compound of formula C3H7NH2. Which one of the following compounds would be produced if the same nitrile was hydrolyzed by heating with dilute hydrochloric acid?

Balochistan Mock 4
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) CH3CONH2
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B) CH3CH2NH2
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C) (CH3)2CHCO2H
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D) CH3CH2CO2H
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Which of the following is soluble in hot water?

Balochistan Mock 4
Biology
Biological Molecules
Carbohydrates
A) Starch
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B) Glycogen
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C) Amylose
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D) Amylopectin
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The loss of liquid via the hydathodes is called:

Balochistan Mock 4
Biology
Transport
A) Ascent of sap
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B) Guttation
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C) Plamolysis
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D) Imbition
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In uncompetitive inhibition, the inhibitor binds with:

Balochistan Mock 4
Biology
A) Enzyme
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B) Substrate
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C) ES-complex
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D) All of these options are correct
Show Explanation

Which of the following hormones of the pituitary gland regulates the menstrual cycle?

Balochistan Mock 4
Biology
Reproduction
Reproduction in Females
A) Follicle Stimulating hormone and Estrogen
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B) Luteinizing hormone and Estrogen
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C) Follicle Stimulating hormone and Luteinizing hormone
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D) Estrogen and Progesterone
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Which of the following is made up of an afferent pathway from a receptor and an efferent pathway to an effector?

Balochistan Mock 4
Biology
Coordination and Control
Steps Involved in Nervous Coordination
A) Nerve cell
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B) Reflex arc
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C) Receptor cells
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D) Mixed nerve
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Haemophilia occurs because of:

Balochistan Mock 4
Biology
Variation and Genetics
Inherited Diseases
A) Mutation in an autosome
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B) Mutation of Y-chromosome
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C) Mutation of X-chromosome
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D) Deficiency of iron
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Which traits are most likely to affect men than women?

Balochistan Mock 4
Biology
Variation and Genetics
Mendelian Inheritance
A) X linked recessive
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B) X linked dominant
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C) Autosomal dominant
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D) Autosomal recessive
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Velocity of sound in air is 332m/s. Velocity of sound in vacuum would be:

Balochistan Mock 4
Physics
Wave Motion and Sound
A) More than 332m/s
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B) Less than 332m/s
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C) 332m/s
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D) Zero
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If we are standing in a bus and the driver applies a brake then we feel:

Balochistan Mock 4
Physics
Forces and Motion
A) A pseudo force pushes backwards
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B) A pseudo force pushes forwards
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C) A real force pushes backwards
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D) A real force pushes forwards
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A block hangs freely from the end of a spring. A boy then slowly pushes the block upwards so that the spring becomes strain free. The gain in gravitational potential energy of the block during this process is equal to:

Balochistan Mock 4
Physics
Work, Power & Energy
A) work done by the boy against the gravitational force acting on the block
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B) loss of energy stored in the spring minus the work done by the tension in the spring
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C) work done on the block by the boy plus the loss of energy stored in the spring
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D) work done on the block by the boy minus the work done by the tension in the spring
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A stationary wave is set up on a string that is fixed at both ends. The frequency of the wave is 400 Hz. If the speed of the wave is 480 m/s, then what is the length of the string?

Balochistan Mock 4
Physics
Wave Motion and Sound
A) 1.2m
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B) 0.84m
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C) 0.60m
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D) 0.42m
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Object A has a charge of 15 mC, and object B has a charge of 10 mC. Which statement is true about the electric forces on the objects?

Balochistan Mock 4
Physics
Electrostatics
Columbs Law
A) FAB = -3 FBA
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B) FAB = – FBA
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C) 3 FAB = – FBA
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D) -3 FAB = 2 FBA
Show Explanation

If a wave can be polarized, it means, it is:

Balochistan Mock 4
Physics
Wave Motion and Sound
A) Longitudinal wave
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B) Stationary wave
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C) Superimposed wave
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D) Transverse wave
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If the body is rotating with uniform angular velocity, then its torque is:

Balochistan Mock 4
Physics
Circular Motion & Momentum
A) Zero
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B) 90
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C) 1
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D) -1
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The shortest distance between two points on a travelling wave that have a phase difference of (pi/3) is 5 cm. If the wave has frequency 500 Hz, what is the speed of the wave?

Balochistan Mock 4
Physics
Wave Motion and Sound
A) 300 m/s
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B) 150 m/s
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C) 300 cm/s
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D) 150 cm/s
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A strong magnetic field is applied on a stationary electron, then the electron ____.

Balochistan Mock 4
Physics
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
A) Moves in the direction of the field.
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B) Moves perpendicular to the direction of the field.
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C) Moves opposite to the direction of the field.
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D) Remains stationary
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The angular measurement is known as _____ measurement

Balochistan Mock 4
Physics
Circular Motion & Momentum
A) parameter
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B) area
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C) circumference
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D) all of these
Show Explanation

What is the number of spectral series in the hydrogen spectrum?

Balochistan Mock 4
Physics
Atomic Spectra
Spectrum of Hydrogen Atom
A) Four
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B) Three
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C) Five
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D) One
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A circular loop of area 0.05 m2 rotates in a uniform magnetic field of 0.2 T. If the loop rotates about its diameter which is perpendicular to the magnetic field, find the flux linked with the loop when its plane is normal to the field.

Balochistan Mock 4
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) 0.01 Wb
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B) 0 Wb
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C) 8.66 x 10-3 Wb
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D) 0.86 Wb
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The phase angle between two points is 3 pi. The distance between these points is 15 cm. What is the wavelength of the wave?

Balochistan Mock 4
Physics
Wave Motion and Sound
A) 30 cm
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B) 45 cm
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C) 5 cm
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D) 10 cm
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Calculate the charge passing through the circuit if it’s current is 10 Ampere and the recorded time is 15 seconds:

Balochistan Mock 4
Physics
Current Electricity
Electric Current
A) 1,500 Coulombs
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B) 150 Coulombs
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C) 13,400 Coulombs
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D) 140 Coulombs
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If number of loops are increased than according to Faraday law ____ will increase.

Balochistan Mock 4
Physics
Magnetism and Electromagnetic Induction
Faradays and Lenz Law and Induced EMF
A) Voltage
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B) Electric field
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C) Magnetic field
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D) All of these
Show Explanation

The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load:

Balochistan Mock 4
Physics
Electronics
Rectification
A) Current is high
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B) Current is low
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C) Voltage is high
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D) Voltage is low
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What is the relationship between power, urrent and voltage?

Balochistan Mock 4
Physics
Current Electricity
Electrical Power and Power Dissipation in Resistors
A) P=V/I
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B) P=VI
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C) 2P=l+V
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D) All of them
Show Explanation

The oscillating object overshoots the rest position due to:

Balochistan Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) restoring force
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B) inertia
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C) gravitational potential energy
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D) elastic potential energy
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Complete the sequence:

2, 15, 41, 80, _____

Balochistan Mock 4
Logical Reasoning
Letters and Symbols Series
A) 111
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B) 120
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C) 121
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D) 132
Show Explanatio

The centripetal force is zero when the centrifugal force is ______.

Balochistan Mock 4
Physics
Circular Motion & Momentum
A) Equal
Show Explanation
B) Zero
Show Explanation
C) Maximum
Show Explanation
D) None of these options are correct
Show Explanation

The diagram shows a wire, carrying an electronic current I, placed between the poles of a magnet. In which direction does the force on the wire act?

Balochistan Mock 4
Physics
Magnetism and Electromagnetic Induction
Force on a Current Carrying Conductor in a Uniform Magnetic Field
A) Into the paper
Show Explanation
B) Towards the N pole of the magnet
Show Explanation
C) Out of the paper
Show Explanation
D) Towards the S pole of the magnet
Show Explanation

The change in resistance of metallic conductor at temperature below 0 degrees is:

Balochistan Mock 4
Physics
Current Electricity
Ohms Law
A) Non-linear
Show Explanation
B) Curve
Show Explanation
C) Linear
Show Explanation
D) Curvilinear
Show Explanation

The angular velocity of the minute hand of a clock is

Balochistan Mock 4
Physics
Circular Motion & Momentum
A) 2π/60rads-1
Show Explanation
B) π/24rads-1
Show Explanation
C) 2π/3600rads-1
Show Explanation
D) π/3600rads-1
Show Explanation

A constant force of 10N is applied in horizontal direction and distance travelled in the direction of force is 2m,then work done is ____.

Balochistan Mock 4
Physics
Work, Power & Energy
A) 50J
Show Explanation
B) 20J
Show Explanation
C) 22J
Show Explanation
D) 10J
Show Explanation

Magnetic force on a charged particle is:

Balochistan Mock 4
Physics
Magnetism and Electromagnetic Induction
Force on a Moving Charge in a Magnetic Field
A) QvBl
Show Explanation
B) None of these
Show Explanation
C) QvB cosθ
Show Explanation
D) QvB sinθ
Show Explanation

The force between two charges Q and q, separated by a distance is F. What will be the force between them when the distance between them is d/2?

Balochistan Mock 4
Physics
Electrostatics
A) 4 F
Show Explanation
B) 2 F
Show Explanation
C) F
Show Explanation
D) F/2
Show Explanation

The body of a car is supported by four springs each of constant 2000 Nm-1. What will be the value of spring constant for this combination of springs?

Balochistan Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) 2000 Nm-1
Show Explanation
B) 8000 Nm-1
Show Explanation
C) 500 Nm-1
Show Explanation
D) 4000 Nm-1
Show Explanation

Which one of the following is not electromagnetic in nature.

Balochistan Mock 4
Physics
Electromagnetic Waves
A) X-rays
Show Explanation
B) Gamma rays
Show Explanation
C) Cathode rays
Show Explanation
D) Infrared rays
Show Explanation

In a full-wave rectification, the number of diodes used are:

Balochistan Mock 4
Physics
Alternating Current
Alternating Voltage and Current
A) 1
Show Explanation
B) 2
Show Explanation
C) 3
Show Explanation
D) 4
Show Explanation

Power developed by a person on eating 100g of ice per minute is (Latent heat of ice is 80 cal/g):

Balochistan Mock 4
Physics
Work, Power & Energy
A) 130 W
Show Explanation
B) 560 cal/sec
Show Explanation
C) 560 J/sec
Show Explanation
D) none of these
Show Explanation

Work function was given by:

Balochistan Mock 4
Physics
Dawn of Modern Physics
Photoelectric Effect
A) Newton
Show Explanation
B) Heisenberg
Show Explanation
C) Einstein
Show Explanation
D) Bohr
Show Explanation

The first law of thermodynamics can be stated as _____.

Balochistan Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) Q = ΔU +W
Show Explanation
B) Q + ΔU = W
Show Explanation
C) Q = ΔU – W
Show Explanation
D) Q = ΔU * W
Show Explanation

The force between two charges Q and q, separated by a distance d is F. What will be the force between them when distance between them is d/2?

Balochistan Mock 4
Physics
Electrostatics
Columbs Law
A) 4F
Show Explanation
B) 2F
Show Explanation
C) F
Show Explanation
D) F/2
Show Explanation

A set of Atoms in an excited state decays:

Balochistan Mock 4
Physics
Atomic Spectra
Bohrs Model of the Hydrogen Atom
A) In any general state with lower energy
Show Explanation
B) In any state when excited by electric field
Show Explanation
C) In any state when excited by magnetic field
Show Explanation
D) None of these options are correct
Show Explanation

The waves which can travel directly along surface of the earth are known as

Balochistan Mock 4
Physics
Wave Motion and Sound
A) ground waves
Show Explanation
B) X-ray
Show Explanation
C) α − rays
Show Explanation
D) sky waves
Show Explanation

The valence band and conduction band of a solid overlap at low temperature, the solid may be:

Balochistan Mock 4
Physics
Heat and Thermodynamics
Work and Heat
A) a metal
Show Explanation
B) a semiconductor
Show Explanation
C) an insulator
Show Explanation
D) none of these
Show Explanation

The ratio of the number of turns in primary and secondary coils of a transformer is 1:20. The ratio of the currents in the primary and secondary will be

Balochistan Mock 4
Physics
Magnetism and Electromagnetic Induction
Transformers
A) 1:20
Show Explanation
B) 20:1
Show Explanation
C) 1:400
Show Explanation
D) 400:1
Show Explanation

An alternation voltage V (in volts) is represented by the equation:
V = 300 sin (100πt)
What is the value of “f” for this voltage?

Balochistan Mock 4
Physics
Alternating Current
Alternating Voltage and Current
A) 100 Hz
Show Explanation
B) 50 Hz
Show Explanation
C) 25 H
Show Explanation
D) 200 Hz
Show Explanation

Platinum wire becomes yellow at a temperature of _______ degree C.

Balochistan Mock 4
Physics
Dawn of Modern Physics
Black Body Radiation
A) 900
Show Explanation
B) 500
Show Explanation
C) 1300
Show Explanation
D) 1600
Show Explanation

When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by

Balochistan Mock 4
Physics
Circular Motion & Momentum
A) Mass of body
Show Explanation
B) Tension in the string
Show Explanation
C) Velocity of body
Show Explanation
D) Centripetal acceleration
Show Explanation

When an ideal gas of constant mass is heated in a container of fixed volume, what is the reason for the increase in pressure of the gas?

Balochistan Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) The number of molecules per unit volume increases
Show Explanation
B) The molecules occupy greater volume of the container
Show Explanation
C) The average force per impact at the container wall increases
Show Explanation
D) The molecules collide with each other with greater force
Show Explanation

A variable force F = x is applied what will be the work done in moving the particle from X= 0 to 1

Balochistan Mock 4
Physics
Work, Power & Energy
A) 2 J
Show Explanation
B) 1 J
Show Explanation
C) 0.5 J
Show Explanation
D) 5 J
Show Explanation

Acceleration in the simple pendulum is always _______ to displacement.

Balochistan Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) Inversely proportional
Show Explanation
B) Directly proportional
Show Explanation
C) Acting positive
Show Explanation
D) Independent
Show Explanation

In case of harmonic oscillator total energy remains ____.

Balochistan Mock 4
Physics
Oscillations and Simple Harmonic Motion
A) Variable
Show Explanation
B) Infinity
Show Explanation
C) Constant
Show Explanation
D) Zero
Show Explanation

A TV tower has a height of 100m. The average population density around the tower is 1000 per km2 . The radius of the earth is 6.4×106 m. × The population covered by the tower is

Balochistan Mock 4
Physics
Electromagnetic Waves
A) 2×106
Show Explanation
B) 3×106
Show Explanation
C) 4×106
Show Explanation
D) 6×106
Show Explanation

In Davisson-Germer experiment, the diffracted electron beam from crystal shows

Balochistan Mock 4
Physics
Dawn of Modern Physics
Wave Nature of Particles
A) Particle property
Show Explanation
B) Light property
Show Explanation
C) Wave property
Show Explanation
D) Quantum property
Show Explanation

How much energy is required to raise the temperature of 5.00 kg of lead from 20.0•c to its melting point of 327°C? The specific heat of lead is 128 J/kg ?•c.

Balochistan Mock 4
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) 1.96 x 10^5 J
Show Explanation
B) 4.04 X 10^5 J
Show Explanation
C) 1.07 X 10^5 J
Show Explanation
D) 8.15 x 10^4 J
Show Explanation

On a planet, a vertically-launched projectile takes 12.5 s to return to its starting position. The projectile gains a maximum height of 170 m. The planet does not have an atmosphere. What is the acceleration of free fall on this planet?

Balochistan Mock 4
Physics
Forces and Motion
Motion in Two Dimensions
A) 2.2 m s−2
Show Explanation
B) 8.7 m s−2
Show Explanation
C) 27 m s−2
Show Explanation
D) 54 m s−2
Show Explanation

A wire of uniform area of cross-section A and length L is cut into two equal parts, the resistivity of each part _____.

Balochistan Mock 4
Physics
Current Electricity
Wire Wound Variable Resistors
A) Doubles
Show Explanation
B) Halves
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C) Remains the same
Show Explanation
D) Increases three times
Show Explanation

Assertion: In n-type semiconductor electrons are the majority charge carriers and holes are minority charge carriers.
Reason: n-type semiconductor is electrically neutral.

Balochistan Mock 4
Physics
Electronics
Semiconductors
A) If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
Show Explanation
B) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
Show Explanation
C) If Assertion is true statement but Reason is false.
Show Explanation
D) If both Assertion and Reason are false statements.
Show Explanation

A body of mass 10 kg is moved parallel to the ground, through a distance of 2 m. The work done against gravitational force is ____.

Balochistan Mock 4
Physics
Work, Power & Energy
A) Zero
Show Explanation
B) 196 J
Show Explanation
C) -196 J
Show Explanation
D) 48 J
Show Explanation

Some ice, at its melting point, is added to m kg of water at the initial temperature of 290K. The ice melts completely and the final temperature of the water is 273K. If c is the specific heat capacity of the water and L is the latent heat of fusion of ice, what is the minimum mass of ice that is required?

Balochistan Mock 4
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
A) 17mc/L
Show Explanation
B) L/17mc
Show Explanation
C) 17m/Lc
Show Explanation
D) 290m/Lc
Show Explanation

Heat is the energy that flows across the?

Balochistan Mock 4
Physics
Heat and Thermodynamics
Work and Heat
A) Surroundings
Show Explanation
B) Boundaries of the system
Show Explanation
C) Only within the system
Show Explanation
D) All of these
Show Explanation

The electron is purely a ___ when free.

Balochistan Mock 4
Physics
Dawn of Modern Physics
Wave Nature of Particles
A) Particle nature
Show Explanation
B) Wave nature
Show Explanation
C) Dual nature
Show Explanation
D) It transforms to photon
Show Explanation

The slope of displacement-time graph has the unit:

Balochistan Mock 4
Physics
Forces and Motion
A) m
Show Explanation
B) s
Show Explanation
C) m/s²
Show Explanation
D) m/s
Show Explanation

Which of the following will not undergo aldol condensation?

Balochistan Mock 4
Chemistry
Aldehydes and Ketones
Reactivity and Reactions of Carbonyl Group
A) Acetaldehyde
Show Explanation
B) Propanaldehyde
Show Explanation
C) Benzaldehyde
Show Explanation
D) Trideuteroacetaldehyde
Show Explanation

IUPAC name of this is (CH3)2 – CH – CH (C2H5) – C(CH3)3

Balochistan Mock 4
Chemistry
Hydrocarbons
Nomenclature of Hydrocarbons
A) 3-ethyl-2, 2, 4-trimethyl pentane
Show Explanation
B) 4-ethyl-2, 2, 4-trimethyl pentane
Show Explanation
C) 5-ethyl-2, 2, 4-trimethyl pentane
Show Explanation
D) 2-ethyl-2, 2, 4-trimethyl pentane
Show Explanation

Variable valency is generally exhibited by:

Balochistan Mock 4
Chemistry
d and f Block Elements
A) Normal elements
Show Explanation
B) Transition elements
Show Explanation
C) Metallic elements
Show Explanation
D) None of them
Show Explanation

Which of the following is TRUE regarding Methyl Alcohol?

Balochistan Mock 4
Chemistry
Alcohol, Phenols, and Ethers
A) It is a colorless, volatile, thin liquid with specific gravity 0.796 at 15°C
Show Explanation
B) It is used for low-temperature thermometers and as a fuel substitute
Show Explanation
C) It is extensively used in the formation of different beverages
Show Explanation
D) It is used as a base for perfumes
Show Explanation

How will the equilibrium of the following reaction be affected if additional nitrogen is added?

N2(g) + 3H2(g)⇌ 2NH3(g)

Balochistan Mock 4
Chemistry
Chemical Equilibrium
Factors Affecting Equilibria
A) It will be shifted to the right.
Show Explanation
B) It will be shifted to the left.
Show Explanation
C) it will be unaffected.
Show Explanation
D) The effect on the equilibrium cannot be determined without more information.
Show Explanation
E) More NH3will be produced.
Show Explanation

The transition element which does not show variable valency is:

Balochistan Mock 4
Chemistry
d and f Block Elements
A) Cu
Show Explanation
B) Sc
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C) Zn
Show Explanation
D) Cr
Show Explanation

The order of reaction for which half-life is inversely proportional to the concentration of reaction is?

Balochistan Mock 4
Chemistry
Reaction Kinetics
Order of reaction and its determination
A) Second Order
Show Explanation
B) Zero Order
Show Explanation
C) First Order
Show Explanation
D) Third Order
Show Explanation

Real gas is converted to ideal gas at:

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Real and Ideal Gas Equation
A) Low temperature, high pressure
Show Explanation
B) High temperature, high pressure
Show Explanation
C) Low temperature, low pressure
Show Explanation
D) High temperature, low pressure
Show Explanation

Different kinds of atoms of the same element are called isotope having different __________but same ___________ properties.

Balochistan Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
Isotopes
A) Physical, atomic
Show Explanation
B) Physical, chemical
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C) Chemical, physical
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D) Chemical, atomic
Show Explanation

Linear combination of atomic orbitals (LCAO) results in the formation of:

Balochistan Mock 4
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Sigma bond
Show Explanation
B) Pi bond
Show Explanation
C) Bonding molecular orbitals only
Show Explanation
D) Bonding and antibonding molecular orbitals
Show Explanation

Which of the following has lowest e/m ratio?

Balochistan Mock 4
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) Li+2
Show Explanation
B) H+
Show Explanation
C) He+
Show Explanation
D) Be
Show Explanation

The raindrop acquires a spherical shape and ink spread over blotting paper due to:

Balochistan Mock 4
Chemistry
Chemical Bonding
Intermolecular Forces
A) Surface tension
Show Explanation
B) Adhesive forces
Show Explanation
C) Viscosity
Show Explanation
D) Polarity
Show Explanation

Which pair of ions have five unpaired d-electrons?

Balochistan Mock 4
Chemistry
d and f Block Elements
A) Fe+2 and Mn+2
Show Explanation
B) Fe+2 and Mn+3
Show Explanation
C) Fe+3 and Mn+3
Show Explanation
D) Fe+3 and Mn+2
Show Explanation

Ethanol, when reacted with PCI5 , gave A, POCl3, and HCI. A reacts with AgNO2 to form B and AgCl. A and B are respectively:

Balochistan Mock 4
Chemistry
Alcohol, Phenols, and Ethers
A) C2H5Cl and C2H5OC2H5
Show Explanation
B) C2H6 and C2H5OC2H5
Show Explanation
C) C2H5Cl and C2H5NO2
Show Explanation
D) C2H6 and C2H5NO2
Show Explanation

CH3CH2CH2COCH3 is the functional isomer of:

Balochistan Mock 4
Chemistry
Fundamental Principles of Organic Chemistry
A) CH3CH2CH2CH2CHO
Show Explanation
B) CH3CH2CH2CH2OH
Show Explanation
C) CH3CH2COCH2CH3
Show Explanation
D) CH3 – (CH)2 COCH2CH3
Show Explanation

During condensation polymerization, two monomers may be joined by the removal of a molecule of:

Balochistan Mock 4
Chemistry
Macromolecules
Introduction and Structure of Polymers
A) Carbon Dioxide
Show Explanation
B) Hydrogen
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C) Oxygen
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D) Water
Show Explanation

The unit used to express the relative atomic mass is called

Balochistan Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
Introduction to the Atom
A) Gram unit
Show Explanation
B) Avogadro’s number
Show Explanation
C) Atomic mass
Show Explanation
D) Atomic mass unit
Show Explanation

Primary Alcohol is produced by reactions of Grignard’s reagent with _________ followed by hydrolysis in an acidic medium.

Balochistan Mock 4
Chemistry
Alcohols, Phenols and Ethers
A) Carbon dioxide
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B) Formaldehyde
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C) Acetaldehyde
Show Explanation
D) Ketone
Show Explanation

Which of the following is an assumption of the kinetic model of an ideal gas?

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Kinetic Molecular Theory Of Gases
A) Gas is at high pressure
Show Explanation
B) Collision between particles are elastic
Show Explanation
C) There are weak forces of attraction between particles in gas
Show Explanation
D) Total energy of particles is proportional to the temperature
Show Explanation

Prussian blue is:

Balochistan Mock 4
Chemistry
d and f Block Elements
A) K2Fe[FeCN6]
Show Explanation
B) K4[FeCN6]
Show Explanation
C) Fe4[Fe(CN)6] 3xH2O
Show Explanation
D) K3FeCN6
Show Explanation

Harmful and undesirable reaction of a metal when exposed to the atmosphere or any chemical agent is known as:

Balochistan Mock 4
Chemistry
Electrochemistry
A) Allotropy
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B) Electroplating
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C) Collision
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D) Cracking
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E) Corrosion
Show Explanation

In which of the following will water evaporate earlier?

Balochistan Mock 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
Analysis of a Compound – Empirical And Molecular Formulas
A) Cup
Show Explanation
B) Saucepan
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C) Glass
Show Explanation
D) Small bowl
Show Explanation

The equation N2(g)+ 3H2(g)⇋ 2NH3(g)represents:

Balochistan Mock 4
Chemistry
Chemical Equilibrium
Haber’s Process
A) Contact process
Show Explanation
B) Haber’s process
Show Explanation
C) Solvay process
Show Explanation
D) Avogadro’s Law
Show Explanation

Which of the following is not a nucleophile?

Balochistan Mock 4
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
A) HO-
Show Explanation
B) NH3
Show Explanation
C) BF3
Show Explanation
D) CN-
Show Explanation

Which type of movement is shown by the atoms of the solid?

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Translational motion
Show Explanation
B) Vibrational motion
Show Explanation
C) Rotational motion
Show Explanation
D) Linear motion
Show Explanation

Which of the following reaction has greater Kp than Kc?

Balochistan Mock 4
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) 2NO + Cl2 2NOCl
Show Explanation
B) 2SO2 + O2 2SO3
Show Explanation
C) 2NOCl 2NO + Cl2
Show Explanation
D) N2 + 3H2 2NH3
Show Explanation

A reaction with a tendency of occurring in forward and backward direction simultaneously is termed as

Balochistan Mock 4
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
A) Irreversible
Show Explanation
B) Unidirectional
Show Explanation
C) Multidirectional
Show Explanation
D) Reversible
Show Explanation

Phenylmethyl ketone can be converted into ethyl benzene in one step by using:

Balochistan Mock 4
Chemistry
Aldehydes and Ketones
Reactivity and Reactions of Carbonyl Group
A) LiAlH4
Show Explanation
B) Zn(Hg)-HCl
Show Explanation
C) NaBH4
Show Explanation
D) CH3MgI
Show Explanation

Which of the following properties does not belong to Gases?

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Kinetic Molecular Theory Of Gases
A) Indefinite volume
Show Explanation
B) Indefinite shape
Show Explanation
C) Low density
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D) Strong interactions
Show Explanation

Ethyl iodide and n-propyl iodide are allowed to undergo Wurtz reaction. The alkane which will not be obtained in this reaction is:

Balochistan Mock 4
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) butane
Show Explanation
B) propane
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C) pentane
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D) hexane
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Alkanes having five to seventeen carbon atoms per molecule are:

Balochistan Mock 4
Chemistry
Hydrocarbons
Alkanes and Paraffins
A) liquids
Show Explanation
B) solids
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C) gases
Show Explanation
D) semi solid wax
Show Explanation

The rate of diffusion of liquids is ________ than gases.

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Diffusion And Effusion
A) Lower
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B) Higher
Show Explanation
C) Equal to
Show Explanation
D) All of these options are correct
Show Explanation

The relationship between quantum number n and l is:

Balochistan Mock 4
Chemistry
Atomic Structure
Plancks Quantum Theory
A) n = l – 1
Show Explanation
B) l = n – 2
Show Explanation
C) l = n – 1
Show Explanation
D) n = l – 2
Show Explanation

Purification of table salt (NaCl) by passing HCl gas through its saturated aqueous solution is an example of:

Balochistan Mock 4
Chemistry
Chemical Equilibrium
A) Law of mass action
Show Explanation
B) Hess’s law
Show Explanation
C) Common ion effect
Show Explanation
D) Henry’s law
Show Explanation

Structure of ice is similar to which of the following?

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Liquid water
Show Explanation
B) Diamond
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C) Graphite
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D) Sucrose
Show Explanation

Sigma bond is formed by:

Balochistan Mock 4
Chemistry
Chemical Bonding
Intermolecular Forces
A) Transferring the electrons
Show Explanation
B) Head-on overlapping of atomic orbitals
Show Explanation
C) Mutual but unequal sharing of electrons
Show Explanation
D) Parallel overlapping of atomic orbitals
Show Explanation

Which of the following carboxylic acids will be the most acidic?

Balochistan Mock 4
Chemistry
Carboxylic Acids and its Derivatives
A) CH3CHClCH2COOH
Show Explanation
B) CH3CH2CCl2COOH
Show Explanation
C) CH3CH2CHClCOOH
Show Explanation
D) CH3CH2CH2COOH
Show Explanation

The raindrop acquires a spherical shape and ink spread over blotting paper due to:

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Liquids and Water
A) Surface tension
Show Explanation
B) Adhesive forces
Show Explanation
C) Viscosity
Show Explanation
D) Polarity
Show Explanation

The oxidation state of “S’ in the (S2O3)-2 is:

Balochistan Mock 4
Chemistry
Electrochemistry
Oxidation Number or State
A) +4
Show Explanation
B) +6
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C) -2
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D) +2
Show Explanation

What is the product of both fermentation reactions and fractional distillation:

Balochistan Mock 4
Chemistry
Alcohol, Phenols, and Ethers
A) An ester
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B) An acid
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C) An alcohol
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D) A soap
Show Explanation

Purification of bauxite whose major impurity Is silica (SiO2) is carried out through:

Balochistan Mock 4
Chemistry
Macromolecules
Introduction and Structure of Polymers
A) Baeyer’s Method
Show Explanation
B) Hall’s Method
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C) Serpek’s Method
Show Explanation
D) Contact Method
Show Explanation

The common oxidation number of halogens is:

Balochistan Mock 4
Chemistry
Electrochemistry
Oxidation Number or State
A) -1
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B) +1
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C) -2
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D) 0
Show Explanation

The isomers must have the same:

Balochistan Mock 4
Chemistry
Fundamental Principles of Organic Chemistry
A) Physical properties
Show Explanation
B) Molecular Formula
Show Explanation
C) Structural Formula
Show Explanation
D) Chemical properties
Show Explanation

Which one of the following molecules has the shortest distance of carbon atoms?

Balochistan Mock 4
Chemistry
Hydrocarbons
Alkynes
A) CH3- CH3
Show Explanation
B) CH2= CH2
Show Explanation
C) CH≡ CH
Show Explanation
D) CH3- CH2- CH3
Show Explanation

Which of the following exerts the lowest vapour pressure?

Balochistan Mock 4
Chemistry
States of Matter – Gases, Liquids and Solids
Boiling Point and Vapor Pressure
A) Chloroform
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B) Methanol
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C) Water
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D) Ethanol
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The general formula for an aldehyde is:

Balochistan Mock 4
Chemistry
Aldehydes and Ketones
Nomenclature of Adehydes and Ketones
A) R-OH
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B) R-COOH
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C) R-CO-R
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D) R-X
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E) R-CHO
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Which of the following cannot be used to convert butanoic acid to butanoyl chloride?

Balochistan Mock 4
Chemistry
Carboxylic Acids and its Derivatives
A) PCl3
Show Explanation
B) PCl5
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C) CCl4
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D) SOCl2
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Linear combination of atomic orbitals (LCAO) results in the formation of:

Balochistan Mock 4
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Sigma bond
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B) Pi bond
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C) Bonding molecular orbitals only
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D) Bonding and antibonding molecular orbitals
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Rate constant is denoted by?

Balochistan Mock 4
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) K
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B) Kr
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C) Kv
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D) Ks
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Which pair has 1 electron in it’s ‘s’ orbital?

Balochistan Mock 4
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) Li & Fe
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B) Na & Cr
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C) K & Mn
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D) H & He
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Which of the following has the least ionization potential?

Balochistan Mock 4
Chemistry
Chemical Bonding
Ionization Energy
A) He
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B) Li
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C) Zn
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D) N
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