End products of yeast fermentation, bacterial fermentation and anaerobic respiration are:

Punjab Mock 5
Biology
Bioenergetics
Anaerobic Respiration
A) Citric acid, lactic acid, carbon dioxide and water
Show Explanation
B) Ethyl alcohol, citric acid and carbon dioxide
Show Explanation
C) Ethyl alcohol, lactic acid, carbon dioxide and water
Show Explanation
D) Methanol, lactic acid and citric acid
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In human beings, what is the function of amylase in digestion?

Punjab Mock 5
Biology
Nutrition
Digestion and Absorption
A) Digestion of triglycerides
Show Explanation
B) Digestion of lipids
Show Explanation
C) Digestion of all types of food
Show Explanation
D) Digestion of carbohydrates
Show Explanation

The process by which unwanted structures within the cell are engulfed and digested within the lysosome is known as:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Endocytosis
Show Explanation
B) Exocytosis
Show Explanation
C) Hydrolysis
Show Explanation
D) Autophagy
Show Explanation

Expiration in human beings is carried out by:

Punjab Mock 5
Biology
Gaseous Exchange
A) Contraction of lungs
Show Explanation
B) Contraction of intercostal membrane
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C) Relaxation of intercostal and diaphragm muscles
Show Explanation
D) Contraction of diaphragm muscles
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A characteristics features of Echinoderm is:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Canal system
Show Explanation
B) Water vascular system
Show Explanation
C) Tracheal system
Show Explanation
D) Blood vascular system
Show Explanation

Where is the ileocolic sphincter located in your body?

Punjab Mock 5
Biology
Nutrition
Digestion and Absorption
A) At the junction of esophagus and stomach
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B) At the junction of stomach and small intestine
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C) At the junction of ileum and large intestine
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D) At the junction of small intestine and large intestine
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Pasteurization technique is widely used for preservation of:

UHS 2013
Biology
Biotechnology
Genetic Engineering & its tools
A) Water
Show Explanation
B) Heat
Show Explanation
C) Milk products
Show Explanation
D) Vaccines
Show Explanation

Malate is oxidized by _______ to oxaloacetate in Krebs’s Cycle.

Punjab Mock 5
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) ATP
Show Explanation
B) NADP
Show Explanation
C) NAD
Show Explanation
D) FAD
Show Explanation

They serve as a scaffold for formation of higher order chromatin structure:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Nucleosome
Show Explanation
B) Nucleus
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C) Chromosomes
Show Explanation
D) Histones
Show Explanation

______ is most abundant carbohydrate in nature.

Punjab Mock 5
Biology
Biological Molecules
Carbohydrates
A) Waxes
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B) Glycerol
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C) Starch
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D) Cellulose
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During which period of interphase (cell cycle) DNA is synthesized?

UHS 2014
Biology
A) G1
Show Explanation
B) G2
Show Explanation
C) S
Show Explanation
D) G0
Show Explanation

The soluble part of cytoplasm or fluid that remains when all organelles are removed is known as:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Solution
Show Explanation
B) Gelatin material
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C) Cytoskeleton
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D) Cytosol
Show Explanation

A condition called Goose pimples, are caused by:

ETEA 2018
Biology
Homeostasis
Thermoregulation
A) Overcooled body
Show Explanation
B) Bacteria
Show Explanation
C) Environmental changes
Show Explanation
D) Pollution
Show Explanation

The intake of liquid materials across the cell membrane is

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Phagocytosis
Show Explanation
B) Endocytosis
Show Explanation
C) Pinocytosis
Show Explanation
D) Exocytosis
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The _______ model of plasma membrane suggests that proteins are embedded in lipid bilayer:

Punjab Mock 5
Biology
Cell Structure and Function
Plasma Membrane
A) Unit membrane
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B) Fluid mosaic
Show Explanation
C) Permeable
Show Explanation
D) Ultracentrifuge
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Amino acid in which the R-group is hydrogen is:

Punjab Mock 5
Biology
Biological Molecules
Proteins
A) Glycine
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B) Alanine
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C) Leucine
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D) Valine
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Optimum pH value for the working of pancreatic lipase is:

Punjab Mock 5
Biology
A) 4.50
Show Explanation
B) 7.60
Show Explanation
C) 2.00
Show Explanation
D) 9.00
Show Explanation

Which of the following is a freshwater sponge?

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Sycon
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B) Leucosolenia
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C) Euplectella
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D) Spongilla
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The outer membrane of the nuclear envelope is at places continuous with the:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Golgi Apparatus
Show Explanation
B) Endoplasmic Reticulum
Show Explanation
C) Lysozomes
Show Explanation
D) Peroxisomes
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In translation the terminating codon is

UHS 2014
Biology
A) GUA
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B) UAA
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C) UUG
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D) AGU
Show Explanation

If the genetic code is made up of three nucleotides, then total possible genetic codes will be

Punjab Mock 5
Biology
Biological Molecules
Nucleic Acid
A) 4
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B) 20
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C) 64
Show Explanation
D) 61
Show Explanation

Which one of the following is a fish?

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Flying fish
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B) Salmon
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C) Sea horse
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D) All of the above
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Passive immunity is used against:

Punjab Mock 5
Biology
Transport
A) Malaria
Show Explanation
B) Typhoid
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C) Dengue
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D) Tetanus
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The flow of lymph in lymphatic vessels is maintained by:

Punjab Mock 5
Biology
Transport
A) Heart, activity of smooth muscles and valves
Show Explanation
B) Activity of skeletal muscles, heart and breathing movements
Show Explanation
C) Breathing movements, activity of skeletal muscles and valves
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D) Exercise, breathing movements and heart
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Cell-mediated immune response is given by:

Punjab Mock 5
Biology
Transport
A) T-lymphocytes
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B) B lymphocytes
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C) Neutrophils
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D) Macrophages
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Book lungs are present in arthropods for exchange of gases in class:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Crustacea
Show Explanation
B) Insecta
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C) Myriapoda
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D) Arachnida
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Which component of the cell is concerned with cell secretions?

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Plasma membrane
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B) Golgi complex
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C) Cytoskeleton
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D) Mitochondria
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The most common respiratory substrate as a source of energy is

Punjab Mock 5
Biology
Bioenergetics
A) Glucose
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B) Sucrose
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C) Fructose
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D) Insulin
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The major cause of hepatitis B is ___.

Punjab Mock 5
Biology
Bio-diversity | Variety of Life
A) Blood transfusion
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B) Blood clotting
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C) Absence of fibrinogen
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D) Contaminated soil
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A complex network of channels extending from plasma membrane to nuclear membrane:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria
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B) Lysosomes
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C) Endoplasmic reticulum
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D) Golgi Apparatus
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Among the following, which acid is an unsaturated acid:

Punjab Mock 5
Biology
Biological Molecules
Lipids
A) Butyric Acid
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B) Oleic Acid
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C) Palmitic Acid
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D) Both Oleic Acid and Palmitic Acid
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Which of the following is purine:

Punjab Mock 5
Biology
Biological Molecules
Nucleic Acid
A) Guanine
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B) Cytosine
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C) Thiamine
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D) Uracil
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The production of genetically identical copies of organisms by asexual reproduction is called:

Punjab Mock 5
Biology
Reproduction
Reproduction in Animals
A) Genetic engineering
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B) Integrated disease management
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C) Hydroponic culture technique
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D) Cloning
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In _____________ response, β-cells produce plasma cells that synthesize antibodies and release in blood plasma and tissue fluid.

Punjab Mock 5
Biology
Transport
A) Cell-Mediated
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B) Hormonal
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C) Humoral
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D) Phototactic
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Which organelle has two Subunits:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Endoplasmic reticulum
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B) Ribosomes
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C) Nucleus
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D) Plastids
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Backbone of amino acids comprises of

Punjab Mock 5
Biology
Biological Molecules
Proteins
A) R group
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B) Amino group
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C) Peptide bond
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D) Carboxylic group
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E) A,B and D
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In the light independent stage of photosynthesis, the CO2 combines with _______ to form an unstable 6-carbon intermediate.

Punjab Mock 5
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
A) Ribulose bisphosphate
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B) Hexose sugar
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C) Glycerate-3-phosphate
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D) Glyceraldehyde-9-phosphate
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During breathing air from Pharynx enters to:

Punjab Mock 5
Biology
Gaseous Exchange
Respiratory System of Man
A) Trachea
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B) Bronchioles
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C) Alveoli
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D) Bronchi
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Treatment by using attenuated culture of bacteria is called

UHS 2014
Biology
A) chemotherapy
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B) sterilization
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C) antisepsis
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D) vaccination
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The simplest independent unit of life is known as:

Punjab Mock 5
Biology
Cell Structure and Function
Introduction to Cell and it’s theory
A) Bacterial colony
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B) Cell
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C) Chloroplast
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D) DNA
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The term which is employed to the loss of appetite due to fear of becoming obese is:

Punjab Mock 5
Biology
Nutrition
A) Obesity
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B) Anorexia nervosa
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C) Dyspepsia
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D) Bulimia nervosa
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The thickest chamber of the human heart is:

Punjab Mock 5
Biology
Transport
A) Left atrium
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B) Right atrium
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C) Right ventricle
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D) Left ventricle
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The most critical phase of mitosis which ensures equal distribution of chromatids in the daughter cells is:

Biology
UHS 2014
A) Prophase
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B) Metaphase
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C) Anaphase
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D) Telophase
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Pseudocoelom is actually derived from:

Punjab Mock 5
Biology
Kingdom Animalia
Classification according to Coelem
A) Blastocoel
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B) Gastrocoel
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C) Neurocoel
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D) Haemocoel
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The group of ribosomes joined by mRNA is called as:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Monosome
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B) Polysomes
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C) Polypeptide

Show Explanation
D) Lysosome
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During animal cell division, the spindle fibres are formed from

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria
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B) Centrioles
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C) Ribosomes
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D) Lysosomes
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Type of respiration which involves step by step breakdown of carbon chain molecules in the cell is called:

Punjab Mock 5
Biology
Bioenergetics
A) External respiration
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B) Cellular respiration
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C) Pulmonary respiration
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D) Cutaneous respiration
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The type of carbohydrate which has high molecular weight and is sparingly soluble in water is:

Punjab Mock 5
Biology
Biological Molecules
Carbohydrates
A) Monosaccharides
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B) Disaccharides
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C) Polysaccharides
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D) Maltose
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The enzymes required for the Kreb cycle are found in ________.

Punjab Mock 5
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) F1 particles
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B) Lysosomes
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C) Cytoplasm
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D) Matrix
Show Explanation

The competitive inhibitors have structural similarity with

Punjab Mock 5
Biology
A) Active site
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B) Binding site
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C) Substrate
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D) Coenzyme
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What is the percentage of lipids in the chemical composition of plasma membrane?

Punjab Mock 5
Biology
Cell Structure and Function
Plasma Membrane
A) 60-80%
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B) 20-40%
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C) 40-80%
Show Explanation
D) 20-60%

Show Explanation

It is an endoparasite of humans, cattle and pig that completes its life cycle in two hosts:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Tapeworm
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B) Liver fluke
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C) Aurelia
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D) Aurelia
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Enzymes have what effect on the end-product?

Punjab Mock 5
Biology
A) They alter the product
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B) The nature of the product is completely changed
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C) No effect
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D) The end product is not obtained
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Granulocytes or white blood cells are produced in:

Punjab Mock 5
Biology
Transport
A) Lymph nodes
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B) Red bone marrow
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C) Tonsils
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D) Spleen
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What is the subunit of DNA

Punjab Mock 5
Biology
Biological Molecules
Nucleic Acid
A) Phosphoric Acid
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B) Base
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C) Nucleotide
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D) Sugar
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The central metabolic station and clearing house of a body is:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Liver
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B) Kidney
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C) Nephron
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D) Glomerulus
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Centrioles are made up of ______ microtubules:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) 9
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B) 27
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C) 3
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D) 12
Show Explanation

Peptidoglycan or murein is a special or distinctive feature of cell wall in

Punjab Mock 5
Biology
Kingdom Prokaryote
A) algae
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B) fungi
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C) bacteria
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D) plants
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The plants having foreign DNA incorporated into their cells are called:

UHS 2013
Biology
Biotechnology
Tissue Culture
A) Colonal plants
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B) Transgenic plants
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C) Bio tech plants
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D) Tissue cultured plants
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The ability to distinguish between two separate points/objects is:

Punjab Mock 5
Biology
Cell Structure and Function
Techniques used in Cell Biology
A) Magnification
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B) Fractionation
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C) Centrifugation
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D) Resolution
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Which one of the following is the site of oxidative phosphorylation in mitochondria?

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Cristae
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B) Matrix
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C) Outer membrane
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D) Ribosomes
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Which of the following holds the alpha helix of protein in its place:

Punjab Mock 5
Biology
Biological Molecules
Proteins
A) R group
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B) Disulfide bond
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C) Amino group
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D) Hydrogen bond
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Lipid metabolism is the function of:

Punjab Mock 5
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria
Show Explanation
B) Sarcoplasmic reticulum
Show Explanation
C) Rough Endoplasmic Reticulum
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D) Smooth Endoplasmic Reticulum
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The use of living organisms in industry for the production of useful products is known as

UHS 2014
Biology
A) parasitology
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B) biochemistry
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C) biotechnology
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D) molecular biology
Show Explanation

Piriformis syndrome is associated with which of the following disorder:

Punjab Mock 5
Biology
Support and Movement
Disorders of Skeleton
A) Arthritis
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B) Sciatica
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C) Spondylosis
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D) Disc slip
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A cofactor tightly bound to the enzyme on the permanent basis is called

Punjab Mock 5
Biology
A) Activator
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B) Coenzyme
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C) Prosthetic group
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D) Apo-enzyme
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Species of Phylum Platyhelminthes are:

Punjab Mock 5
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Roundworms
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B) Flatworms
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C) Hook worms
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D) Threadworms
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Which one of the following acts as functional unit of lungs in man?

Punjab Mock 5
Biology
Gaseous Exchange
A) Air sac
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B) Trachea
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C) Larynx
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D) Bronchioles
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The equation shows the reaction between element X and dilute hydrochloric acid.

X(s) + 2HCl(aq) -> XCl2(aq) + H2(g)

What types of bonding is present in element X and in compound XCl2?

Punjab Mock 5
Chemistry
Chemical Bonding
Metallic Bonding
A) Option A
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B) Option B
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C) Option C
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D) Option D
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The spectrum of He is expected to be similar to that of:

Punjab Mock 5
Chemistry
Atomic Spectra
A) Hydrogen
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B) Sodium
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C) Oxygen
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D) Li+
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Diameter of an atom is in the range of?

Punjab Mock 5
Chemistry
Atomic Structure
Bohrs Model of Atom
A) 0.2m
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B) 0.2 nm
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C) 2 x 10^-19nm
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D) 0.2 pm
Show Explanation

When 18 x 10-3 moles/dm3 of acetic acid react with 22 x 10-3 moles/dm3 of ethyl alcohol to form 40 x 10-3 moles/dm3 of ethyl acetate and 40 x 10-3 moles/dm-3 of water. Find the value of equilibrium constant (kc):

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) 4.04
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B) 3.14
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C) 3.04
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D) 2.02
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A compound was found to contain nitrogen and oxygen in the ratio 28g:80g. The formula of the compound is:

Punjab Mock 5
Chemistry
Stoichiometry
Mole
A) NO
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B) N2O3
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C) N2O4
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D) N2O5
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78 g of a hydrocarbon occupies 22.414 dm3 of volume at S.T.P. The empirical formula of the hydrocarbon is CH. The molecular formula of this hydrocarbon is:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Analytical Chemistry
Stoichiometry
Mole
A) C2H4
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B) C6H6
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C) C8H8
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D) C4H4
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For, the reaction:

N2 + 3H2 ⇌ 2NH3

The production of NH3 will be favored at:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Factors Affecting Equilibria
A) High pressure and catalyst
Show Explanation
B) Low pressure only
Show Explanation
C) Low pressure and catalyst
Show Explanation
D) High pressure only
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The heat of a reaction can be calculated by using:

Punjab Mock 5
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
A) Joule’s Law
Show Explanation
B) Ohm’s Law
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C) Hess’s Law
Show Explanation
D) Faraday’s Law
Show Explanation

Dissolution of ammonium nitrate in water is an endothermic process. Which of the following graphs shows how the temperature alters as the ammonium nitrate is added to water and then the solution is left at room temperature?

Punjab Mock 5
Chemistry
Thermochemistry
Standard States and Enthalpy Changes
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

A child’s balloon has a volume 3.80 dm3, when the temperature is 35°C. If the balloon is put in a refrigerator and cooled to 5°c, the approximate volume of the balloon is (assume pressure inside the balloon is equal to atmospheric pressure):

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Boiling Point and Vapor Pressure
A) 3.00 dm3
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B) 3.43dm3
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C) 3.08 dm3
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D) 3.25 dm3
Show Explanation

In a reaction:

A+B 2C

When equilibrium was attained, the concentration was

[A] = [B] = 4 moles/dm3

[C]= 6 moles/dm3
The equilibrium constant Kc of this reaction is:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) 1.25
Show Explanation
B) 2.25
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C) 3.25
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D) 2.75
Show Explanation

The maximum number of electrons in an atom with n=3 and l=2 is:

Punjab Mock 5
Chemistry
Atomic Structure
A) 10
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B) 6
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C) 18
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D) 0
Show Explanation

The measurement of heat absorbed or given out in a chemical reaction is referred to as:

Punjab Mock 5
Chemistry
Thermochemistry
Heat Capacity and Calorimetry
A) Endothermic reaction
Show Explanation
B) Exothermic reaction
Show Explanation
C) Thermochemistry
Show Explanation
D) Heat of formation
Show Explanation

An element has configuration 2, 8, 1. It belongs to, ______.

Punjab Mock 5
Chemistry
Atomic Structure
A) IA group and 3rd period
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B) IIIA group and 1st period
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C) IA group and 8th period
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D) VIIA group and 3rd period
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If the ratio of initial concentration of the reagents is greater than the Kc then:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) The reaction will shift towards the reverse direction
Show Explanation
B) More quantity of products is obtained
Show Explanation
C) The ratio increases to the value of Kc
Show Explanation
D) Equilibrium has been attained
Show Explanation

Which is the configuration of Cr?

Punjab Mock 5
Chemistry
Atomic Structure
A) [Ar] 3d4 4s2
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B) [Ar] 3d5 4s1
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C) [Ar] 3d6 4s1
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D) [Ar] 3d1 4s2
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Which of the following statements is true of Amorphous solids?

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Types of Solids
A) They possess symmetry
Show Explanation
B) They are isotropic
Show Explanation
C) They are anisotropic
Show Explanation
D) They cleave along a particular direction
Show Explanation
E) They have a definite shape
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Which of the following solids is an example of a substance with a macromolecular structure?

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Types of Solids
A) Aluminium chloride
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B) Ice
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C) Magnesium oxide
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D) Silicon (IV) oxide
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E) Sodium chloride
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Which of the following molecules have zero Dipole moments?

Punjab Mock 5
Chemistry
Chemical Bonding
Covalent Bond
A) CCl4
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B) CO2
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C) Cl2
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D) C6H6
Show Explanation
E) All of the above
Show Explanation

950 torr corresponds to:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Daltons Law of Partial Pressures
A) 3.5 atm
Show Explanation
B) 1 atm
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C) 3 atm
Show Explanation
D) 1.25 atm
Show Explanation

Which of the following has the maximum number of unpaired electrons?

Punjab Mock 5
Chemistry
d and f Block Elements
A) Mg2+
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B) V3+
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C) Ti3+
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D) Fe2+
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Cl + e —-> Cl-
ΔH = -348kJ/mol
The value -348KJ/mol in this case will be:

Punjab Mock 5
Chemistry
Thermochemistry
Standard States and Enthalpy Changes
A) Ionization energy
Show Explanation
B) Electronegativity
Show Explanation
C) Electron affinity
Show Explanation
D) Entropy
Show Explanation

Which of the following statements is NOT true for the first law of thermodynamics?

Punjab Mock 5
Chemistry
Thermochemistry
Laws of Thermodynamics
A) Total energy of the system and surrounding is conserved
Show Explanation
B) Energy can neither be created nor destroyed
Show Explanation
C) It is the same as law of conservation of energy
Show Explanation
D) Total energy of the system is increasing
Show Explanation

A 4s orbital has:

Punjab Mock 5
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) One node
Show Explanation
B) Two nodes
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C) three nodes
Show Explanation
D) O nodes
Show Explanation

Bond energy:

I. is the energy required to break a bond between two atoms in a diatomic molecule

II. Is taken as the energy released in forming a bond form free atoms

III. Is the measure of the strength of bond

Punjab Mock 5
Chemistry
Chemical Bonding
Bond Energy and Bond Length
A) I only
Show Explanation
B) I and II only
Show Explanation
C) I and IIII only
Show Explanation
D) II only
Show Explanation
E) I, II and III
Show Explanation

The common features, among the species CN-, CO, and NO+ are:

Punjab Mock 5
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Bond order 3 and Isoelectronic
Show Explanation
B) Bond order three and weak field ligands
Show Explanation
C) Bond order two andπacceptors
Show Explanation
D) Isoelectronic and weak field ligands
Show Explanation

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

Punjab Mock 5
Chemistry
Chemical Bonding
Intermolecular Forces
A) Surface tension
Show Explanation
B) Adhesive forces
Show Explanation
C) Viscosity
Show Explanation
D) Polarity
Show Explanation

When does a gas deviate the most from its ideal behavior ?

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Non Ideal Behaviour Of Gases
A) At low pressure and high temperature
Show Explanation
B) At high pressure and high temperature
Show Explanation
C) At low pressure and low temperature
Show Explanation
D) At high pressure and low temperature
Show Explanation

Enthalpy of a compound is equal to its:

Punjab Mock 5
Chemistry
Thermochemistry
Enthalpies of Reactions and its Types
A) Heat of combustion
Show Explanation
B) Heat of formation
Show Explanation
C) Heat of solution
Show Explanation
D) Heat of dilution
Show Explanation

The boiling point of water is higher than other hydrides because water molecules can form:

Punjab Mock 5
Chemistry
Chemical Bonding
Hydrogen Bonding
A) 4 hydrogen bonds
Show Explanation
B) 3 hydrogen bonds
Show Explanation
C) 2 hydrogen bonds
Show Explanation
D) 1 hydrogen bonds
Show Explanation

Sigma bond is formed by:

Punjab Mock 5
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

Avogadro’s constant is the number of:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
A) Electrons present in 2g of H
Show Explanation
B) Atoms in 24g of Mg
Show Explanation
C) Atoms in 1g of He
Show Explanation
D) Molecules in 35.5g of Chlorine
Show Explanation

The mass number of an atom is:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Introduction to the Atom
A) The number of electrons
Show Explanation
B) The number of neutrons
Show Explanation
C) The number of protons
Show Explanation
D) The number of neutrons and protons
Show Explanation

Solid NaCl is a bad conductor of electricity because:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Solid NaCl is covalent
Show Explanation
B) In the solid state, there are no ions
Show Explanation
C) In solid NaCl. there is no migration of ions
Show Explanation
D) In solid NaCl, there are not electron
Show Explanation

One mole of substance at STP has:

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
Mole
A) 2.24 dm³
Show Explanation
B) 24.4 dm³
Show Explanation
C) 2.44 dm³
Show Explanation
D) 22.4 dm³
Show Explanation

According to the law of mass action, “The rate of chemical reaction” is proportional to the:

Punjab Mock 5
Chemistry
Chemical Equilibrium
Equilibrium Constant
A) The amount of product formed
Show Explanation
B) Product of the molar concentration of reactants
Show Explanation
C) The initial concentration of reactants
Show Explanation
D) Catalyst
Show Explanation

The enthalpy change accompanying the gain of an electron by a neutral gaseous atom to form a negative ion is called:

Punjab Mock 5
Chemistry
Thermochemistry
Enthalpies of Reactions and its Types
A) Ionization potential
Show Explanation
B) Electronegativity
Show Explanation
C) Electron affinity
Show Explanation
D) Lattice energy
Show Explanation

C12H22O11+ conc. H2SO4—> 12 C + ? + H2SO4

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
Theoretical Yield, Actual Yield and Percentage Yield
A) 11 H2O
Show Explanation
B) 11 O2
Show Explanation
C) 11 CO2
Show Explanation
D) 11 H2
Show Explanation

Which of the following does not show variable valency?

Punjab Mock 5
Chemistry
d and f Block Elements
A) Mn
Show Explanation
B) Fe
Show Explanation
C) Zn
Show Explanation
D) Cr
Show Explanation

The unit of viscosity is:

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Viscocity and Surface Tension
A) Joule
Show Explanation
B) N/m2
Show Explanation
C) Dynes/cm
Show Explanation
D) Poise
Show Explanation

Which of the following has six isotopes?

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Isotopes
A) Manganese
Show Explanation
B) Tin
Show Explanation
C) Calcium
Show Explanation
D) Carbon
Show Explanation

If the matter in a given system at a given condition is divided into two equal parts, then the value of the extensive properties will become:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
A) Double of the original value
Show Explanation
B) Half of the original value
Show Explanation
C) Remain the same as the original value
Show Explanation
D) One-fourth of the original value
Show Explanation

Which of the following is the chemical formula of a compound indicating the relative number of atoms in the simplest ratio?

Punjab Mock 5
Chemistry
Stoichiometry
Mole
A) Empirical formula
Show Explanation
B) Empirical formula mass
Show Explanation
C) Molecular formula
Show Explanation
D) Molecular mass
Show Explanation

Choose the value of the Rydberg constant among the following values:

Punjab Mock 5
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) 1.09678 x 107 m-1
Show Explanation
B) 1.602 x 10-19 C
Show Explanation
C) 1.7588 x 1011 C
Show Explanation
D) 1.007 x 107 m-1
Show Explanation

Comparative rates of diffusion of He and SO2 will be _______.

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Diffusion And Effusion
A) 8
Show Explanation
B) 2
Show Explanation
C) 4
Show Explanation
D) 16
Show Explanation

In an adiabatic process:

Punjab Mock 5
Chemistry
Thermochemistry
Laws of Thermodynamics
A) Pressure is maintained constant
Show Explanation
B) The gas is isothermally expanded
Show Explanation
C) There is perfect heat insulation
Show Explanation
D) System exchanges heat with the surroundings
Show Explanation

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

Punjab Mock 5
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

How many molecules are there in 2.1 moles of CO₂:

Punjab Mock 5
Chemistry
Fundamental Principles of Organic Chemistry
Stoichiometry
A) 3.49 x 10⁻²⁴
Show Explanation
B) 2.53 x 10²⁴
Show Explanation
C) 1.26 x 10²⁴
Show Explanation
D) 3.79 x 10²⁴
Show Explanation

A bond is not formed:

Punjab Mock 5
Chemistry
Chemical Bonding
A) When both forces become equal to each other
Show Explanation
B) When attraction forces dominate repulsive forces
Show Explanation
C) When repulsive forces become equal to zero
Show Explanation
D) When repulsive forces dominate attraction forces
Show Explanation

When an element exists in more than one crystalline form, the phenomenon is termed as:

Punjab Mock 5
Chemistry
States of Matter – Gases, Liquids and Solids
Properties of Crystalline Solids
A) Isomorphism
Show Explanation
B) Pollymorphism
Show Explanation
C) Isomerism
Show Explanation
D) Anisotropy
Show Explanation

Sp3 hybridization in CH4 gives it ______ geometry.

Punjab Mock 5
Chemistry
Chemical Bonding
VSEPR Theory
A) Linear
Show Explanation
B) Coplanar
Show Explanation
C) Tetrahedral
Show Explanation
D) Octahedral
Show Explanation

H2S is an example of ______ hydride.

NTS 2012
Chemistry
Chemical Bonding
Hydrogen Bonding
A) Ionic
Show Explanation
B) Covalent
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C) Complex
Show Explanation
D) Metallic
Show Explanation

22.4 dm3 of volume of each H2 and O2 are sparked to produce water vapours (considered as ideal gas) on completion of reaction. What is the decrease in the volume of the vessel?

Punjab Mock 5
Chemistry
Introduction to Fundamental Concepts of Chemistry
Stoichiometry
Theoretical Yield, Actual Yield and Percentage Yield
A) 44 dm3
Show Explanation
B) 22.4 dm3
Show Explanation
C) 33.6 dm3
Show Explanation
D) 11.2 dm3
Show Explanation

Electronic configuration of K is:

Punjab Mock 5
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
A) [Ar] 4s2
Show Explanation
B) [Ar] 4s1
Show Explanation
C) [Kr] 4s1
Show Explanation
D) [He] 4s1
Show Explanation

We prefer fruits ____ sweets.

Punjab Mock 5
English
Fill in the blank
A) Then
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B) On
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C) Over
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D) From
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Choose the correct option:

Punjab Mock 5
English
Tenses and Sentence Structure
A) Every one of prisons are full
Show Explanation
B) Every one of the prisons had full
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C) Every one of the prisons have full
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D) Every one of the prisons is full
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There was _____ article about pollution in _____ paper.

Punjab Mock 5
English
Fill in the blank
A) A..an
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B) An…the
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C) A…the
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D) A…a
Show Explanation

Choose the correctly punctuated sentence:

Punjab Mock 5
English
Grammar and Punctuation
A) What a fall was there, my country men! Long live the king!
Show Explanation
B) What a fall was there! My countrymen. Long live the king!
Show Explanation
C) What a fall was there, my countrymen. Long live the king.
Show Explanation
D) What a fall was there, my countrymen, long live the King.
Show Explanation

We went to the President as a last ______________.

Punjab Mock 5
English
Fill in the blank
A) Recourse
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B) Resort
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C) Resource
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D) Resound
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Did I say anything to make you angry?

Punjab Mock 5
English
Tenses and Sentence Structure
A) Declarative
Show Explanation
B) lmperative
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C) Interrogative
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D) Exclamatory
Show Explanation

I borrowed ________ pencil from your pile of pencils and pens.

Punjab Mock 5
English
Fill in the blank
A) A
Show Explanation
B) An
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C) The
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D) No article is required
Show Explanation

Which verb is NOT in the present tense?

Punjab Mock 5
English
Tenses and Sentence Structure
A) She listened
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B) She talks
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C) She waits
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D) She eats
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Select the option which fits appropriately in the blank:

Dan __________ a lot of friends.

Punjab Mock 5
English
Fill in the blank
A) Have
Show Explanation
B) Has
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C) Is having
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D) Having
Show Explanation

Choose the correct sentence:

Punjab Mock 5
English
Tenses and Sentence Structure
A) However, it didn’t take long for others to jump on board.
Show Explanation
B) However it didn’t take long for others to jump on board.
Show Explanation
C) However, it didn’t take long for others to jump on board?
Show Explanation
D) However. It didn’t take long for others to jump on board.
Show Explanation

Choose the word most similar in meaning to the capitalized one:

DISRUPTION:

Punjab Mock 5
English
Key Vocabulary
A) Comfort
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B) Luxury
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C) Trouble
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D) Freedom
Show Explanation

Not only the parents but also their son ______ for interview.

Punjab Mock 5
English
Fill in the blank
A) Has called
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B) Have called
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C) Have been called
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D) Has been called
Show Explanation

Some of the books on the table __________ to me.

Punjab Mock 5
English
Fill in the blank
A) Belong
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B) Belonging
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C) Belongs
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D) Was belong
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Select the option which fits appropriately in the blank:

The gardner will have _________ the flowers.

Punjab Mock 5
English
Fill in the blank
A) Plucked
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B) Pluck
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C) Plucks
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D) None of these options are correct
Show Explanation

Select the option which fits appropriately in the blank:

Annie and her brothers __________ at school.

Punjab Mock 5
English
Fill in the blank
A) Is
Show Explanation
B) Are
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C) Are being
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D) Have
Show Explanation

Find the error in the following sentence:

Punjab Mock 5
English
Identify errors in sentence
A) They have been
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B) Very close friends
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C) Until they quarelled
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D) Over a petty issue.
Show Explanation

He was ________ of theft in the court.

Punjab Mock 5
English
Fill in the blank
A) Charged
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B) Blamed
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C) Reported
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D) Accused
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Ahmed ____ me for a long time.

Punjab Mock 5
English
Fill in the blank
A) Know
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B) Has known
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C) Knows
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D) Knew
Show Explanation

According to the first law of thermodynamics, ΔU = Q + W, where ΔU Is the increase in internal energy of the system, Q is the heat transferred to the system and W is the external work done on the system.
Which of the following is NOT a correct expression?

Punjab Mock 5
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) At constant temperature: Q = -W
Show Explanation
B) When no work is done: ΔU = Q
Show Explanation
C) Work done on the system: ΔU = Q + P Δ V
Show Explanation
D) When work is done by the system: ΔU = Q + W
Show Explanation

Which graph in SHM shows the K.E of a body:

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
A) Option A
Show Explanation
B) Option B
Show Explanation
C) Option C
Show Explanation
D) Option D
Show Explanation

Law of conservation of momentum states that:

I. there is no external force applied to a system, then the total momentum of that system remains constant

II. if there is an external force applied to a system, then the total momentum of that system remains constant

III. if there is no external force applied to a system, then the total momentum of that system keeps changing

Punjab Mock 5
Physics
Circular Motion & Momentum
A) I only
Show Explanation
B) I and II only
Show Explanation
C) I and III only
Show Explanation
D) III only
Show Explanation

A body is moving with an initial velocity of 2 kms-1. After a time of 50 secs its velocity becomes 1.5 kms-1, Its acceleration will be:

Punjab Mock 5
Physics
Forces and Motion
A) 30 ms-1
Show Explanation
B) 40 ms-1
Show Explanation
C) 20 ms-1
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D) 10 ms-1
Show Explanation

A battery of 6 volts is connected to two resistors of 3 ohm and 2 ohm joined together in series. What will be the current through the circuit?

Punjab Mock 5
Physics
Current Electricity
Electric Current
A) 6.2 A
Show Explanation
B) 5.2 A
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C) 4.2 A
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D) 2.2 A
Show Explanation
E) 1.2 A
Show Explanation

When the antinodes, in stationary waves, are passing through their equilibrium position, the energy is:

Punjab Mock 5
Physics
Wave Motion and Sound
A) Potential only
Show Explanation
B) Kinetic only
Show Explanation
C) A combination of both forms of energy
Show Explanation
D) There is no energy in stationary waves
Show Explanation

Which one of the following statements is true concerning the motion of an ideal projectile launched at an angle of 45° to the horizontal?

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) The acceleration vector points opposite to the velocity vector on the way up and in the same direction as the velocity vector on the way down.
Show Explanation
B) The speed at the top of the trajectory is zero.
Show Explanation
C) The object’s total speed remains constant during the entire flight.
Show Explanation
D) The horizontal speed decreases on the way up and also decreases on the way down.
Show Explanation
E) The vertical speed decreases on the way up and increases on the way down.
Show Explanation

In Doppler effect, if listener moves towards a stationary source then:

Punjab Mock 5
Physics
Wave Motion and Sound
A) Observed frequency is greater than original frequency
Show Explanation
B) Observed frequency is less than original frequency
Show Explanation
C) Observed frequency is equal to original frequency
Show Explanation
D) Observed frequency is independent of original frequency
Show Explanation

.A stone dropped from a certain height can reach the ground in 5 s. It is stopped after 3 seconds of its fall and then allowed to fall again. Find the time taken by the stone to reach the ground for the remaining distance.

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 2 s
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B) 4 s
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C) 6 s
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D) 8 s
Show Explanation

The following question belongs to the topic of momentum:

Punjab Mock 5
Physics
Circular Motion & Momentum
A) Current
Show Explanation
B) Length
Show Explanation
C) Angular momentum
Show Explanation
D) Torque
Show Explanation

There is a current of 25 A in a long straight wire. What is the flux density at a point 3 cm from the wire?

Punjab Mock 5
Physics
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) 1.67 x 10-4 T
Show Explanation
B) 3.67 x 10-4 T
Show Explanation
C) 5.67 x 10-4 T
Show Explanation
D) 7.67 x 10-4 T
Show Explanation

How much heat is absorbed by 100 g of water when its temperature decreases from 25. C to 5. C? (heat capacity is 4.2 j/gk)

Punjab Mock 5
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) 84,000 J
Show Explanation
B) -2000/4.2 J
Show Explanation
C) 2000/4.2 J
Show Explanation
D) -84000
Show Explanation

To double the total energy for a mass-spring system oscillating in SHM, by what factor must the amplitude increase?

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
A) 4
Show Explanation
B) 2
Show Explanation
C) √2 = 1.414
Show Explanation
D) ∜2 = 1.189
Show Explanation

.A rock is thrown straight upward from the edge of a 30 m cliff, rising 10 m then falling all the way down to the base of the cliff.

Find the rock’s displacement.

Punjab Mock 5
Physics
Forces and Motion
A) 20 meters downward
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B) 30 meters downward
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C) 40 meters upward
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D) 50 meters upward
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The quantity of heat required to raise the temperature of one mole of a substance through 1 K is called:

Punjab Mock 5
Physics
Heat and Thermodynamics
First Law of Thermodynamics
A) Carnot engine
Show Explanation
B) Molar specific heat
Show Explanation
C) Kinetic specific heat
Show Explanation
D) General gas law
Show Explanation

A thermocouple is immersed in water at 373 K and the other in ice at 273K. The emf of the thermocouple Is 90 (μ)V for each 1 K difference in temperature between junctions, and the thermocouple resistance is 6 Ω. What current will flow in the galvanometer connected in series with an internal resistance of 30ohms?

Punjab Mock 5
Physics
Current Electricity
A) 1.8 μA
Show Explanation
B) 250 μA
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C) 300 μA
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D) 1.5 mA
Show Explanation

In a ripple tank, 40 waves pass through a certain point in one second. If the wavelength of the waves is 5 cm, then find the speed of the wave:

Punjab Mock 5
Physics
Wave Motion and Sound
A) 2.7 m/s
Show Explanation
B) 3 m/s
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C) 200 m/s
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D) 2 m/s
Show Explanation

Two point charges of +5 C and -12 C attract each other with a force of 1.48 N. charge of -5 C is added to each of these charges. Now the force will be:

Punjab Mock 5
Physics
Electrostatics
A) 1.48 N (attractive)
Show Explanation
B) 1.48 N (repulsive)
Show Explanation
C) 2.96 (repulsive)
Show Explanation
D) Zero
Show Explanation

The total outward flux over any closed hypothetical surface called _____ is equal to the total charge enclosed divided by ε irrespective of how the charge is distributed.

Punjab Mock 5
Physics
Electrostatics
A) Coulomb surface
Show Explanation
B) Gaussian surface
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C) Ohm surface
Show Explanation
D) Faraday surface
Show Explanation

Equation of SHM, with amplitude ‘a’ is given by:

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
A) X = a(sin2ω t + cos2ω t)
Show Explanation
B) X = a(sin ω t cos2ω t)
Show Explanation
C) X = a sin ω t
Show Explanation
D) X = a2sin (sin ω t)
Show Explanation

Two capacitors C1 (6μF) and C2(12μF) are in series across a 180 volts d.c. supply. Calculate the potential difference across each capacitor (C1 and C2).

Punjab Mock 5
Physics
Electrostatics
A) 98 volts … 32 volts
Show Explanation
B) 120 volts … 60 volts
Show Explanation
C) 68 volts … 96 volts
Show Explanation
D) 30 volts … 65 volts
Show Explanation

A wave, which transfers _____ by moving away from the source of disturbance is called _____ wave.

Punjab Mock 5
Physics
Wave Motion and Sound
A) Momentum ; standing
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B) Energy ; standing
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C) Energy ; progressive
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D) Momentum ; progressive
Show Explanation

A player throws a ball at an initial velocity of 36 m/second. The maximum distance the ball can reach (assume ball is caught at the same height at which it was released) is:

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 146 m
Show Explanation
B) 130 m
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C) 132 m
Show Explanation
D) 129 m
Show Explanation

A moon of mass ‘m’ orbits a planet of mass 100 m. Let the strength of the gravitational force exerted by the planet on the moon be denoted by F1 , and let the strength of the gravitational force exerted by the moon on the planet be F2 . Which of the following is true?

Punjab Mock 5
Physics
Forces and Motion
A) F1 is ten times greater than F2
Show Explanation
B) F1 is ten times smaller than F2
Show Explanation
C) F2 is ten times greater than F1
Show Explanation
D) F2 is ten times smaller than F1
Show Explanation
E) F1 is equal to F2
Show Explanation

What will be the energy of an X-ray quantum of wave length 1.0 x 10-10 m?

Punjab Mock 5
Physics
Dawn of Modern Physics
A) 0.6 x 10^-15 J
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B) 1.98 x 10^-15 J
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C) 3.7 x 10^-15 J
Show Explanation
D) 4.7 x 10^-15 J
Show Explanation

A constant force acting on a body of mass 5 kg changes its speed from 2 /s to 7 m/s in 10 s the direction of motion of the body remains unchanged. Find the magnitude of the force.

Punjab Mock 5
Physics
Forces and Motion
A) 0.5 N
Show Explanation
B) 1.5 N
Show Explanation
C) 2.5 N
Show Explanation
D) 3.5 N
Show Explanation

A shot leaves a gun at the rate of 160m/s. Calculate the greatest distance to which it could be projected and the height to which it would rise: (g=10 m/s2)

Punjab Mock 5
Physics
Forces and Motion
Motion in Two Dimensions
A) 1560m, 540m
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B) 2560m, 640m
Show Explanation
C) 3560m, 740m
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D) 4560m, 840m
Show Explanation

At which of the following places, motion of simple pendulum becomes slowest:

Punjab Mock 5
Physics
Oscillations and Simple Harmonic Motion
A) Murree
Show Explanation
B) Karachi
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C) K-2
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D) Peshawar
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Two positive point charges are placed 2m apart. The electric potential at midpoint due to these two charges will be _____:

Punjab Mock 5
Physics
Electrostatics
A) Added to double
Show Explanation
B) Reduced to half
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C) Remains same (no effect)
Show Explanation
D) Cancel each other effect
Show Explanation

The six strings of a guitar are the same length under nearly the same tension, but they have different thicknesses. On which string do waves travel the fastest?

Punjab Mock 5
Physics
Wave Motion and Sound
A) The thickest string
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B) The thinnest string
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C) The wave speed is the same on all the strings
Show Explanation
D) None of the above
Show Explanation

Charges of +2 μC and -2 μC are situated at points P and Q respectively, as shown below. X is midway between P and Q. Which of the following correctly describes the electric field and the electric potential at point X?

Punjab Mock 5
Physics
Electrostatics
A) Option A
Show Explanation
B) Option B
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C) Option C
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D) Option D
Show Explanation

The product of frequency and time period is equal to:

Punjab Mock 5
Physics
Wave Motion and Sound
A) 2
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B) 3
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C) 0
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D) 1
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A battery whose emf is 40 V has an internal resistance of 5 Ohms. If this battery is connected to a 15 Ohms resistor ‘R’, what will be the voltage drop across ‘R’:

Punjab Mock 5
Physics
Current Electricity
Electrical Power and Power Dissipation in Resistors
A) 10 V
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B) 30 V
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C) 40 V
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D) 50 V
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