Which cartilage is present at the end of long bones?

KPK Mock 2
Biology
Support and Movement
Support and Movement in Animals
A) Calcified cartilage
Show Explanation
B) Hyaline cartilage
Show Explanation
C) Elastic cartilage
Show Explanation
D) Fibrous cartilage
Show Explanation

Most enzymes have an optimum temperature of around:

Enzymes
KPK Mock 2
Biology
A) 30 C
Show Explanation
B) 40 C
Show Explanation
C) 50 C
Show Explanation
D) 20 C
Show Explanation

A normal-­visioned man whose father was colour­-blind marries a woman whose father was also colour-­blind. They have their first child as a daughter. What are the chances that this child would be colour­-blind?

KPK Mock 2
Biology
Variation and Genetics
Inherited Diseases
A) 100%
Show Explanation
B) Zero percent
Show Explanation
C) 25%
Show Explanation
D) 50%
Show Explanation

XX-XY type of sex determination pattern is present in which of the following organisms?

KPK Mock 2
Biology
Variation and Genetics
Sex Determination
A) Humans
Show Explanation
B) Butterflies
Show Explanation
C) Grasshopper
Show Explanation
D) Drosophila
Show Explanation
E) Both A and D
Show Explanation

Two species can avoid competition and can make better use of the environment’s resources by occupying different:

KPK Mock 2
Biology
Evolution
A) Adaptation
Show Explanation
B) Polymorphism
Show Explanation
C) Niches
Show Explanation
D) Specialisation
Show Explanation

A test cross is carried out to:

KPK Mock 2
Biology
Variation and Genetics
Inherited Diseases
A) Determine the genotype of a plant at F2
Show Explanation
B) Predict whether two traits are linked
Show Explanation
C) Assess the number of alleles of a gene
Show Explanation
D) Determine whether two species or varieties will breed successfully or not
Show Explanation

The organism developed with two heads and one trunk is called:

KPK Mock 2
Biology
Reproduction
Reproduction in Females
A) Identical twins
Show Explanation
B) Dizygotic twins
Show Explanation
C) Fraternal twins
Show Explanation
D) Siamese twins
Show Explanation

Which of these enzymes work best at a pH of 2.00?

KPK Mock 2
Biology
A) Sucrase
Show Explanation
B) Salivary enzymes
Show Explanation
C) Pepsin
Show Explanation
D) Enterokinase
Show Explanation

Reverse transcriptase is a useful enzyme to have when

KPK Mock 2
Biology
Variety of Life
A) RNA virus converts its RNA to DNA
Show Explanation
B) there are no host cells present
Show Explanation
C) nutrients are scarce
Show Explanation
D) spikes are forming in the new virus
Show Explanation

A condition called Goose pimples, are caused by:

KPK Mock 2
Biology
Homeostasis
Thermoregulation
A) Overcooled body
Show Explanation
B) Bacteria
Show Explanation
C) Environmental changes
Show Explanation
D) Pollution
Show Explanation

How many ml of oxygen are present in a litre of water?

KPK Mock 2
Biology
Transport
A) 10
Show Explanation
B) 20
Show Explanation
C) 40
Show Explanation
D) 200
Show Explanation

Freshly released human egg has:

KPK Mock 2
Biology
Reproduction
Reproduction in Females
A) one Y chromosome
Show Explanation
B) one X ­chromosome
Show Explanation
C) two X­ chromosome
Show Explanation
D) one X ­chromosome and one Y­ chromosome
Show Explanation

The nuclear envelope is a derivative of

KPK Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) microtubules
Show Explanation
B) rough endoplasmic reticulum
Show Explanation
C) smooth endoplasmic reticulum
Show Explanation
D) membrane of Golgi complex.
Show Explanation

The first hormone to be discovered was:

KPK Mock 2
Biology
Coordination and Control
Endocrine System and its Hormones
A) Secretin
Show Explanation
B) Testosterone
Show Explanation
C) Insulin
Show Explanation
D) Thyroxin
Show Explanation

Which of the following is absent in C4 Plants:

KPK Mock 2
Biology
Bioenergetics
CAM & C4 Plants
A) Calvin Cycle
Show Explanation
B) Bundle Sheath cells
Show Explanation
C) Pepco
Show Explanation
D) CO2 Fixation in Mesophyll
Show Explanation

Sarcolemma is the membrane around?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Bone
Show Explanation
B) Joints
Show Explanation
C) Muscle fiber
Show Explanation
D) Heart
Show Explanation

Which one is not an opportunistic disease related to HIV infection:

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Biology
Variety of Life
A) Destruction of body immune system
Show Explanation
B) Recurrent pneumonia
Show Explanation
C) Pulmonary tuberculosis
Show Explanation
D) Toxoplasmosis
Show Explanation

What is the most abundant carbohydrate in nature?

KPK Mock 2
Biology
Biological Molecules
Carbohydrates
A) Cellulose
Show Explanation
B) Starch
Show Explanation
C) Fructose
Show Explanation
D) Glycogen
Show Explanation

Smooth reficulum are similar in structure to:

KPK Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) RER
Show Explanation
B) Golgi bodies
Show Explanation
C) Microfilaments
Show Explanation
D) Sarcoplasmic reticulum
Show Explanation

The enzyme which is found in saliva, accelerates the conversion of starch into sugar is

KPK Mock 2
Biology
Nutrition
Digestion and Absorption
A) Pepsin
Show Explanation
B) Thrombin
Show Explanation
C) Ptyalin
Show Explanation
D) Fumarase
Show Explanation

In humans the disease symptoms develop during the:

KPK Mock 2
Biology
Kingdom Prokaryote
Growth and Reproduction in Bacteria
A) Log phase
Show Explanation
B) Lag phase
Show Explanation
C) Growth phase
Show Explanation
D) Decline phase
Show Explanation

Which of the following combination is an example of self-replicating organelles?

KPK Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Mitochondria and ribosomes
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B) Mitochondria and nucleus
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C) Mitochondria and vacuoles
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D) Mitochondria and chloroplasts
Show Explanation

The breakdown of glucose in cell yields pyruvate in the:

KPK Mock 2
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
A) Presence of oxygen
Show Explanation
B) Absence of oxygen
Show Explanation
C) Presence or absence of oxygen
Show Explanation
D) High Conc. of oxygen
Show Explanation

A man has to face interview, but during his first five minutes before the interview he experiences sweating, increased heart rate and respiration. Which hormone is responsible for his restlessness

KPK Mock 2
Biology
Coordination and Control
Endocrine System and its Hormones
A) Adrenocorticotropic hormone
Show Explanation
B) Insulin and glucagon
Show Explanation
C) Epinephrine and norepinephrine
Show Explanation
D) Aldosterone
Show Explanation

Which is distributed more widely in a cell?

KPK Mock 2
Biology
Biological Molecules
Nucleic Acids
A) DNA
Show Explanation
B) RNA
Show Explanation
C) Chloroplasts
Show Explanation
D) Phagosomes
Show Explanation

What event is thought to have contributed to the evolution of eukaryotes ?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Biology
Variety of Life
A) Global warming
Show Explanation
B) Glaciations
Show Explanation
C) Volcanic activity
Show Explanation
D) Oxygenation of the atmosphere
Show Explanation

About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH surge) normally occurs?

KPK Mock 2
Biology
Reproduction
Reproduction in Females
A) 14th day
Show Explanation
B) 20th day
Show Explanation
C) 5th day
Show Explanation
D) 11th day
Show Explanation

The repeated protein pattern of myofibrils is called:

KPK Mock 2
Biology
Support and Movement
Ultrastructure & Mechanism of Skeletal Muscle Contraction
A) Sarcomere
Show Explanation
B) Sarcolemma
Show Explanation
C) Zyomere
Show Explanation
D) Cross bridges
Show Explanation

Lock and Key Model for enzyme action propose by Emil Fischer suggests that:

Enzymes
KPK Mock 2
Biology
A) Enzymes are unbiased for the substrate
Show Explanation
B) Enzymes can modify their active sites
Show Explanation
C) Enzymes are restricted to one reaction type
Show Explanation
D) An enzyme can catalyze variety of reactions
Show Explanation

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement:

KPK Mock 2
Biology
Variation and Genetics
Inherited Diseases
A) Both are due to a quantitative defect in globin chain synthesis
Show Explanation
B) Thalassemia is due to less synthesis of globin molecules
Show Explanation
C) Sickle cell anaemia is due to a quantitative problem of globin molecules
Show Explanation
D) Both are due to a qualitative defect in globin chain synthesis
Show Explanation

About 55% of the volume of human blood is:

KPK Mock 2
Biology
Nutrition
A) Plasma
Show Explanation
B) Blood cells
Show Explanation
C) Blood Protein
Show Explanation
D) A and B
Show Explanation

Otitis media is an inflammation of which part of the

KPK Mock 2
Biology
Coordination and Control
Disorders of the Nervous System
A) Brain
Show Explanation
B) Middle ear
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C) Lungs
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D) Urinary tract
Show Explanation

The deficiency of which micronutrient causes goiter formation?

KPK Mock 2
Biology
Coordination and Control
Endocrine System and its Hormones
A) Iron
Show Explanation
B) Zinc
Show Explanation
C) lodine
Show Explanation
D) Sodium
Show Explanation

The possible reason(s) for cyanosis, one of congenital heart disease is

KPK Mock 2
Biology
Transport
A) Formation of carboxy-hemoglobin
Show Explanation
B) The high concentration of oxyhemoglobin
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C) Low level of CO
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D) Low level of hemoglobin
Show Explanation

Find mismatch

KPK Mock 2
Biology
A) Thyroid gland-T3 and T4
Show Explanation
B) Parathyroid gland-Calcitonin
Show Explanation
C) Pancreas-Insulin
Show Explanation
D) Gonads-Testes and ovaries
Show Explanation

Rhizobium belongs to:

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Biology
A) Beta-protobacteria
Show Explanation
B) Gama-protobacteria
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C) Alpha-protobacteria
Show Explanation
D) Delta-protobacteria
Show Explanation

Which of the following is an example of class by bivalvia?

KPK Mock 2
Biology
Kingdom Animalia
Phylums – porifera to chordata
A) Anodonta
Show Explanation
B) Lolgio
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C) Limax
Show Explanation
D) Sepia
Show Explanation

Human embryo remains enclosed in:

KPK Mock 2
Biology
Reproduction
Reproduction in Females
A) Amniotic sac
Show Explanation
B) Amnion
Show Explanation
C) Chorion
Show Explanation
D) Allantois
Show Explanation

How many water molecules will be released upon the formation of a trisaccharide?

KPK Mock 2
Biology
Biological Molecules
Introduction to Biological Molecules
A) 1
Show Explanation
B) 2
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C) 3
Show Explanation
D) 4
Show Explanation

Sulphur bacteria belongs to sun group of bacteria called

KPK Mock 2
Biology
Kingdom Prokaryote
Taxonomy, Ecology & Diversity of Bacteria
A) Beta-proteo bacteria
Show Explanation
B) Alpha proteobacteria
Show Explanation
C) Gamma proteo bacteria
Show Explanation
D) Delta proteo bacteria
Show Explanation

The common name of rubella is:

KPK Mock 2
Biology
Variety of Life
A) Whooping cough
Show Explanation
B) German measles
Show Explanation
C) African sleeping Sickness
Show Explanation
D) Tay Sach’s Disease
Show Explanation

Hypothalamus connected to pituitary gland via:

KPK Mock 2
Biology
Coordination and Control
Central Nervous System
A) Nerves
Show Explanation
B) Infundibulum
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C) Blood
Show Explanation
D) No connection
Show Explanation

XO in drosophila result in sterile:

KPK Mock 2
Biology
Variation and Genetics
Sex Determination
A) Female
Show Explanation
B) Male
Show Explanation
C) Both (A) & (B)
Show Explanation
D) No effect
Show Explanation

Expiratory centre in medulla is:

KPK Mock 2
Biology
Gaseous Exchange
Respiratory System of Man
A) Dorsal
Show Explanation
B) Ventral
Show Explanation
C) Lower part
Show Explanation
D) All of the above
Show Explanation

A graph plotting absorption of light of different wave lenghts by a pigment is called as:

KPK Mock 2
Biology
Bioenergetics
Photosynthetic pigments
A) Absorption spectrum
Show Explanation
B) Spectrophotometer
Show Explanation
C) Carotenoids
Show Explanation
D) Xanthophylls
Show Explanation

The first successful surgery of heart was performed by Dr. Ludwig by repairing a wound on which part:

KPK Mock 2
Biology
Transport
A) Right auricle
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B) Right ventricle
Show Explanation
C) Left auricle
Show Explanation
D) Left ventricle
Show Explanation

Which of the following statements about enzymes is false?

KPK Mock 2
Biology
Classification of Enzymes
A) The Keq of a reaction remains unchanged in the presence of an enzyme
Show Explanation
B) Enzymes speed up the rate of reaction in DNA synthesis
Show Explanation
C) Harsh, acidic conditions can completely denature an enzyme
Show Explanation
D) An enzyme is completely converted to product during metabolism
Show Explanation

What will be the geometrical shape of a molecule that contains two lone pairs and two bond pairs of electron in valence shell of central atom?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
Chemical Bonding
VSEPR Theory
A) Tetrahedral
Show Explanation
B) Trigonal pyramidal
Show Explanation
C) Angular
Show Explanation
D) Linear
Show Explanation

The ability to distinguish between two separate points/objects is:

KPK Mock 2
Biology
Cell Structure and Function
Techniques used in Cell Biology
A) Magnification
Show Explanation
B) Fractionation
Show Explanation
C) Centrifugation
Show Explanation
D) Resolution
Show Explanation

Carotenoids perform protective function in which of the following organism?

KPK Mock 2
Biology
Biological Molecules
Lipids
A) Animals
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B) Plants
Show Explanation
C) Both
Show Explanation
D) None of these
Show Explanation

To the end of the first trimesters the embryo can now technically describe as a

KPK Mock 2
Biology
Growth and Development
Embryonic Development
A) Zygote
Show Explanation
B) Infant
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C) Toddler
Show Explanation
D) Fetus
Show Explanation

Goblets cells are:

KPK Mock 2
Biology
Gaseous Exchange
Respiratory System of Man
A) Unicellular exocrine gland
Show Explanation
B) Unicellular endocrine glands
Show Explanation
C) Multicellular exocrine gland
Show Explanation
D) Multicellular endocrine glands
Show Explanation

Tobacco mosaic virus (TMV) genes are

KPK Mock 2
Biology
Bio-diversity | Variety of Life
A) single stranded RNA
Show Explanation
B) double stranded DNA
Show Explanation
C) Proteinaceous
Show Explanation
D) double stranded RNA.
Show Explanation

Which one of the following conditions correctly describes the manner of determining the sex?

KPK Mock 2
Biology
Variation and Genetics
A) Homozygous sex chromosomes (ZZ) determine female sex in birds.
Show Explanation
B) XO type of sex chromosomes determine male sex in grasshopper.
Show Explanation
C) XO condition in humans as found in Turner’s syndrome, determines female sex.
Show Explanation
D) Homozygous sex chromosomes (XX) produce male in Drosophila.
Show Explanation

When the sperm count is high, inhibin hormone release increases which:

KPK Mock 2
Biology
Reproduction
Reproduction in Males
A) Inhibits anterior pituitary release follicle stimulating g hormone
Show Explanation
B) Increase anterior pituitary release of follicle stimulating hormone
Show Explanation
C) Inhibit release of luteinizing hormone
Show Explanation
D) Increaserelease of luteinizing hormoneave
Show Explanation

How many sperms are produced from fifty secondary spermatocyte?

KPK Mock 2
Biology
Reproduction
Reproduction in Males
A) 200
Show Explanation
B) 100
Show Explanation
C) 50
Show Explanation
D) 150
Show Explanation

Which one of the following cell organelles is enclosed by a single membrane?

KPK Mock 2
Biology
Cell Structure and Function
Cytoplasm and Organelles
A) Lysosomes
Show Explanation
B) Nuclei
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C) Mitochondria
Show Explanation
D) Chloroplasts
Show Explanation

Which wave lengths are mainly absorbed by chlorophyll?

KPK Mock 2
Biology
Bioenergetics
Photosynthetic pigments
A) Violet blue and red
Show Explanation
B) Green and blue
Show Explanation
C) Violet and orange
Show Explanation
D) Red and indigo
Show Explanation

In E.C.G QRS complex represent:

KPK Mock 2
Biology
Transport
A) Atrial systole
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B) Arial diastole
Show Explanation
C) Ventricle systole
Show Explanation
D) Ventricle diastole
Show Explanation

How many nucleotides are in 12 mRNA codons?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Biology
Chromosomes and DNA
The Chemical Nature of DNA
A) 12
Show Explanation
B) 24
Show Explanation
C) 36
Show Explanation
D) 48
Show Explanation

Cholesterol is:

KPK Mock 2
Biology
Biological Molecules
Lipids
A) Animal sterol
Show Explanation
B) C27H46O
Show Explanation
C) 5 methyl groups
Show Explanation
D) All of these
Show Explanation

Lungs are made up of air­filled sacs, the alveoli. They do not collapse even after forceful expiration because of

KPK Mock 2
Biology
Gaseous Exchange
Respiratory System of Man
A) inspiratory reserve volume
Show Explanation
B) tidal volume

Show Explanation
C) expiratory reserve volume
Show Explanation
D) residual volume
Show Explanation

The nephridia in earthworm are analogous to

KPK Mock 2
Biology
Phylums – porifera to chordata
A) nematoblasts of Hydra
Show Explanation
B) flame cells of Planaria
Show Explanation
C) gills of prawn
Show Explanation
D) trachea of insects.
Show Explanation

In the intestine, amino acids are absorbed by?

KPK Mock 2
Biology
Nutrition
Digestion and Absorption
A) Capillaries
Show Explanation
B) Lacteals
Show Explanation
C) Both A and B
Show Explanation
D) None of the above options are correct
Show Explanation

The cell wall of most of the bacteria have a unique macromolecule called_______.

KPK Mock 2
Biology
Biological Molecules
Carbohydrates
A) Cellulose
Show Explanation
B) Chitin
Show Explanation
C) Fibres
Show Explanation
D) Fats
Show Explanation
E) Peptidoglycan
Show Explanation

ABO Blood groups are an example of:

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Biology
A) Multiple alleles and incomplete dominance
Show Explanation
B) Co dominance and incomplete dominance
Show Explanation
C) Incomplete dominance only
Show Explanation
D) Multiple alleles and co dominance
Show Explanation

Recombinants contains DNA from

KPK Mock 2
Biology
Chromosomes and DNA
DNA Replication
A) 2 different sources
Show Explanation
B) Single source
Show Explanation
C) 2 same sources
Show Explanation
D) 3 same sources
Show Explanation

A powerful digesting enzyme that is capable of destroying a cell’s internal structure is called ____

KPK Mock 2
Biology
Classification of Enzymes
A) Lipase
Show Explanation
B) DNase
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C) Phospholipase
Show Explanation
D) Pepsin
Show Explanation

The animals which eat both plant and animal foods are called

KPK Mock 2
Biology
Nutrition
A) Filter feeders
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B) Omnivores
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C) Fluid feeders
Show Explanation
D) Macrophagus feeders
Show Explanation

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

KPK Mock 2
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

Which of the following statements about electromagnetic waves is/are correct?
(1) X-rays in vacuum travel faster than light waves in vacuum.
(2) The energy of X-ray photon is greater than that of a light photon
(3) Light can be polarised but X-ray cannot.

KPK Mock 2
Physics
Current Electricity
Alternating Current
Atomic Spectra
A) 1 and 2
Show Explanation
B) 2 and 3
Show Explanation
C) 1, 2 and 3
Show Explanation
D) 2 only
Show Explanation

There are initially 400 atoms in a radioactive sample. What would be the number of atoms after 3 half – life?

KPK Mock 2
Physics
Current Electricity
Alternating Current
Nuclear Physics
A) 400
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B) 200
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C) 50
Show Explanation
D) 25
Show Explanation

If λv, λx and λm represent the wavelengths of visible light, X-rays and microwaves respectively, then:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electromagnetic Waves
A) λm > λx > λv
Show Explanation
B) λm > λv > λx
Show Explanation
C) λv > λx > λm
Show Explanation
D) λv > λm > λx
Show Explanation

A car at rest starts moving with linear uniformly increasing velocity. After 20 seconds, it attains the maximum velocity of 80 m/s. What is the distance covered during this time interval?

KPK Mock 2
Physics
Forces and Motion
A) 200 m
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B) 400 m
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C) 800 m
Show Explanation
D) 1600 m
Show Explanation

While using radiation therapy, cancerous thyroid is treated with ____ radioisotope:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Nuclear Physics
Biological Effects and Uses of Radiation
A) Carbon
Show Explanation
B) 235 Uranium
Show Explanation
C) Thorium
Show Explanation
D) Iodine
Show Explanation

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

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electronics
A) a metal
Show Explanation
B) a semiconductor
Show Explanation
C) an insulator
Show Explanation
D) none of these
Show Explanation

The voltage in the primary and the secondary coils of a step-up transformer are 200V and 4KV respectively. If the current in the primary is 1 ampere then the current in the secondary coil will be

KPK Mock 2
Physics
Magnetism and Electromagnetic Induction
Transformers
A) 50mA
Show Explanation
B) 5A
Show Explanation
C) 500mA
Show Explanation
D) 1.5mA
Show Explanation

1 radian is equal to:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Circular Motion & Momentum
A) 57.1 degrees
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B) 57.2 degrees
Show Explanation
C) 57.3 degrees
Show Explanation
D) 57.4 degrees
Show Explanation

At every point of the trajectory of projectile, which of the following quantities is always zero?

Projectile motion
KPK Mock 2
Physics
Motion in Two Dimensions
A) Horizontal velocity
Show Explanation
B) Total velocity
Show Explanation
C) Vertical accelaration
Show Explanation
D) Horizontal acceleration
Show Explanation

The frame of reference could be:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Dawn of Modern Physics
A) Fixed always
Show Explanation
B) Not fixed always
Show Explanation
C) At rest
Show Explanation
D) None of these
Show Explanation

The decay constant λ of a radioactive sample

KPK Mock 2
Physics
Current Electricity
Alternating Current
Nuclear Physics
A) Decrease as the age of atoms increase
Show Explanation
B) Increase as the age of atoms increase
Show Explanation
C) Is independent of the age
Show Explanation
D) Depends on the nature of activity
Show Explanation

A car battery has EMF of 12 volts and internal resistance 5x 10-2 ohm. If it draws 60 ampere current, then terminal voltage of the battery will be:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Current Electricity
A) 5 volts
Show Explanation
B) 3 volts
Show Explanation
C) 15 volts
Show Explanation
D) 9 volts
Show Explanation

The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating of 100 milliwatts. What should be the value of the resistor R, connected in series with the diode, for obtaining maximum current?

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electronics
A) 1.5 Ω
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B) 5 Ω
Show Explanation
C) 6.67 Ω
Show Explanation
D) 200 Ω
Show Explanation

A cyclist is travelling at 15 ms-1, she applies brakes so that she doesn’t collide with the wall in front of her at a distance of 18 m. Calculate the magnitude of deceleration.

Equations of Uniformly Accelerated Motion
KPK Mock 2
Physics
Forces and Motion
A) 6.3 ms-1
Show Explanation
B) 5.3 ms-1
Show Explanation
C) 13 ms-1
Show Explanation
D) 12.5 ms-1
Show Explanation

A sphere of mass 2 kg and radius 5 cm rolls without slipping along a horizontal plane. The velocity of its centre of mass is 10 cm/s. The kinetic energy of the sphere is:

KPK Mock 2
Physics
Circular Motion & Momentum
A) 0.07 J
Show Explanation
B) 0.014 J
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C) 0.025 J
Show Explanation
D) 1.25 J
Show Explanation

In transmission from grid station, power losses are minimized by:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Magnetism and Electromagnetic Induction
Transformers
A) Decreasing current
Show Explanation
B) Decreasing resistance.
Show Explanation
C) Increasing resistance
Show Explanation
D) Increasing voltage
Show Explanation

A particle performs uniform circular motion with angular momentum ‘L’. If the frequency of the particle’s motion is halved and its KE is doubled then the angular momentum becomes:

KPK Mock 2
Physics
Circular Motion & Momentum
A) L/4
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B) 4L
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C) 2L
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D) L/2
Show Explanation

In what form is the energy stored in a charged capacitor?

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electrostatics
A) gravitational
Show Explanation
B) electrical potential
Show Explanation
C) magnetic field
Show Explanation
D) potential
Show Explanation

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

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

The sound waves of frequency more than 20 khz are termed as:

KPK Mock 2
Physics
Wave Motion and Sound
A) Supersonic
Show Explanation
B) Audible
Show Explanation
C) Infrasonic
Show Explanation
D) Ultrasonic
Show Explanation

Work function for a certain surface is 3.3 ev. Minimum frequency, light must have in order to eject electron from surface will be:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Dawn of Modern Physics
A) 8 x 1014 Hz
Show Explanation
B) 3.2 x 1015 Hz
Show Explanation
C) 4.8 x 1015 Hz
Show Explanation
D) 6.4 x 1015 Hz
Show Explanation

Which two or more of the following actions would increase the energy stored in a parallel plate capacitor when a constant potential difference is applied across the plates?

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electrostatics
A) Decreasing the area of the plates. Decreasing the separation between the plates
Show Explanation
B) Decreasing the area of the plates. Increasing the separation between the plates Inserting a dielectric between the plates
Show Explanation
C) Increasing the area of the plates. Decreasing the separation between the plates. Inserting a dielectric between the plates
Show Explanation
D) Increasing the area of the plates. Increasing the separation between the plates
Show Explanation

Tesla is unit of ____ per unit area:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Magnetism and Electromagnetic Induction
Magnetic Flux and Flux Density
A) Magnetic field lines
Show Explanation
B) Electric field lines
Show Explanation
C) Optical field lines
Show Explanation
D) Gravitational field lines
Show Explanation

The wavelength associated with an electron is of the order of:

KPK Mock 2
Physics
Atomic Spectra
A) Visible light
Show Explanation
B) X rays
Show Explanation
C) Radio waves
Show Explanation
D) Infrared
Show Explanation

The domestic electricity supply has a frequency of:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Current Electricity
Electric Current
A) 150 Hz
Show Explanation
B) 100 Hz
Show Explanation
C) 50 Hz
Show Explanation
D) 25 Hz
Show Explanation

One kilowatt-hour is commonly termed as one commercial unit of electric energy which is equal to:

KPK Mock 2
Physics
Current Electricity
A) 3.6 x 105 J
Show Explanation
B) 3.6 x 106 J
Show Explanation
C) 3.6 x 104 J
Show Explanation
D) 3.6 x 103 J
Show Explanation

Which of the following series lies in the ultraviolet range:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Optics, Nature of Light and Optical Instruments
Nature Of Light
A) Balmer series
Show Explanation
B) Pashcher series
Show Explanation
C) Lyman series
Show Explanation
D) Brackett series
Show Explanation

The output voltage of a rectifier is:

KPK Mock 2
Physics
Current Electricity
Alternating Current
A.C. Circuits
Alternating Current
A) Smooth
Show Explanation
B) Pulsating
Show Explanation
C) Perfectly direct
Show Explanation
D) Alternating
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

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electromagnetic Waves
A) 2×106
Show Explanation
B) 3×106
Show Explanation
C) 4×106
Show Explanation
D) 6×106
Show Explanation

According to coulomb’s law, the electrostatic forces of attraction between electron and nucleus are ______ to its square of the radius.

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electrostatics
A) Directly proportional
Show Explanation
B) Inversely proportional
Show Explanation
C) Equal
Show Explanation
D) None of these options are correct
Show Explanation

PIV stands for :

KPK Mock 2
Physics
Current Electricity
Alternating Current
Alternating Current
A) Positive inverse voltage
Show Explanation
B) Pawn Bh Integrated voltage
Show Explanation
C) Peak inverse voltage
Show Explanation
D) Peak integrated voltage
Show Explanation

Infrasonic waves have a frequency of:

Progessive Waves
KPK Mock 2
Physics
Wave Motion and Sound
A) Greater than 20000 Hz
Show Explanation
B) Less than 20 Hz
Show Explanation
C) 20 Hz
Show Explanation
D) Greater than 20 Hz
Show Explanation

Iodine-131 is used to trace which cancer

PMC Sample 2
Physics
Current Electricity
Alternating Current
Nuclear Physics
Biological Effects and Uses of Radiation
A) lungs
Show Explanation
B) thyroid gland
Show Explanation
C) breast
Show Explanation
D) liver
Show Explanation

A container is filled with oxygen and helium at the same temperature. The molar mass of oxygen is 32 g/mol and that of helium is 4 g/mol.

What is the ratio:
average speed of oxygen molecules / average speed of helium molecules

KPK Mock 2
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
A) 1/√8
Show Explanation
B) √8
Show Explanation
C) 1/8
Show Explanation
D) 8
Show Explanation

In which rectifier is the ripple factor less?

KPK Mock 2
Physics
Current Electricity
Alternating Current
A.C. Circuits
A) Full wave
Show Explanation
B) Half wave
Show Explanation
C) Both A and B
Show Explanation
D) None of them
Show Explanation

The transverse nature of light is shown by

KPK Mock 2
Physics
Current Electricity
Alternating Current
Dawn of Modern Physics
A) Interference of light
Show Explanation
B) Refraction of light
Show Explanation
C) Polarization of light
Show Explanation
D) Dispersion of light
Show Explanation

The cyclotron frequency of an electron projected with velocity’ perpendicular to a magnetic field B is given by

KPK Mock 2
Physics
Current Electricity
Alternating Current
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
A) f= mB/πC
Show Explanation
B) f= 2πeB/m
Show Explanation
C) f= eB/2πm
Show Explanation
D) f= 2πc/mB
Show Explanation

The main difference between X rays and Y rays is:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Optics, Nature of Light and Optical Instruments
Diffraction of X-rays by Crystal
A) Frequency
Show Explanation
B) Wave length
Show Explanation
C) Energy
Show Explanation
D) Origin
Show Explanation

One of the following is an Ohmic device:

KPK Mock 2
Physics
Current Electricity
Ohms Law
Current Electricity
A) Filament bulb
Show Explanation
B) Semiconductor diode
Show Explanation
C) Transistor
Show Explanation
D) Copper wire
Show Explanation

The resistance of a device is designed to change with temperature. What is the device?

KPK Mock 2
Physics
Current Electricity
Alternating Current
Current Electricity
Wire Wound Variable Resistors
A) A light dependent resistor
Show Explanation
B) A potential divider
Show Explanation
C) A semiconductor diode
Show Explanation
D) A thermistor
Show Explanation

The angular measurement is known as _____ measurement

KPK Mock 2
Physics
Circular Motion & Momentum
A) parameter
Show Explanation
B) area
Show Explanation
C) circumference
Show Explanation
D) all of these
Show Explanation

System in thermodynamics is disconnected with surrounding by

KPK Mock 2
Physics
Heat and Thermodynamics
Work and Heat
A) Pressure
Show Explanation
B) Universe
Show Explanation
C) Boundary
Show Explanation
D) Temperature
Show Explanation

Ohm multiplied by farad is equivalent to:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Electrostatics
A) Time
Show Explanation
B) Charge
Show Explanation
C) Distance
Show Explanation
D) Capacitor
Show Explanation

If a half wave rectifier is used to convert 50Hz AC into DC, then the number of pulses present in rectified voltage is:

KPK Mock 2
Physics
Current Electricity
Alternating Current
A.C. Circuits
A) 25
Show Explanation
B) 50
Show Explanation
C) 100
Show Explanation
D) 75
Show Explanation

A spring of force constant 800 N/m has an extension of 5 cm, the work done in extending it from 5 cm to 15 cm

KPK Mock 2
Physics
Oscillations and Simple Harmonic Motion
A) 16 J
Show Explanation
B) 8 J
Show Explanation
C) 32 J
Show Explanation
D) 24 J
Show Explanation

A metal cube with sides of length “?” has electrical resistance ? between opposite faces. What is the resistance between the opposite faces of a cube of the same metal with sides of length 3??

KPK Mock 2
Physics
Current Electricity
Alternating Current
Current Electricity
A) 9?
Show Explanation
B) 3?
Show Explanation
C) R/3
Show Explanation
D) ?/9
Show Explanation

An electron is projected horizontally from south to north in uniform horizontal magnetic field acting from west to east. The direction along which it will be deflected is:

KPK Mock 2
Physics
Current Electricity
Alternating Current
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
A) Northwards
Show Explanation
B) Southwards
Show Explanation
C) Vertically upwards
Show Explanation
D) Vertically downwards
Show Explanation

Two wave sources are oscillating in phase. Each source produces a wave of wavelength ?. The two waves from the sources meet at point ? with a phase difference of 90°.What is a possible difference in the distances from the two wave sources to point ??

KPK Mock 2
Physics
Wave Motion and Sound
A) ?/8
Show Explanation
B) ?/4
Show Explanation
C) ?/2
Show Explanation
D) ?
Show Explanation

If f1 and f2 are frequencies of two tuning forks, such that f1 < f2, then number of beats produced in one second are: KPK Mock 2 Physics Oscillations and Simple Harmonic Motion A) f2 - f1 Show Explanation B) f2 x f1 Show Explanation C) f1 - f2 Show Explanation D) f2 + f1 Show Explanation

Which photon carries the most energy?

KPK Mock 2
Physics
Current Electricity
Alternating Current
Optics, Nature of Light and Optical Instruments
Nature Of Light
A) Blue
Show Explanation
B) Violet
Show Explanation
C) Red
Show Explanation
D) Green
Show Explanation

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:

KPK Mock 2
Physics
Work, Power & Energy
A) work done by the boy against the gravitational force acting on the block
Show Explanation
B) loss of energy stored in the spring minus the work done by the tension in the spring
Show Explanation
C) work done on the block by the boy plus the loss of energy stored in the spring
Show Explanation
D) work done on the block by the boy minus the work done by the tension in the spring
Show Explanation

A body of mass 5 kg, projected at an angle of 45° from the ground covers a horizontal range of 45 m. The acceleration due to gravity is g = 10 m/s^2. What is the velocity with which it was projected?

KPK Mock 2
Physics
Motion in Two Dimensions
A) 22.5 m/s
Show Explanation
B) 20 m/s
Show Explanation
C) 19.8 m/s
Show Explanation
D) 21.21 m/s
Show Explanation

A cell of internal resistance 2.0Ω and electromotive force (e.m.f) 1.5V is connected a resistor of resistance 3.0Ω. What is the potential difference across the 3.0Ω resistor?

Electomotive Force and Potential Difference
KPK Mock 2
Physics
Current Electricity
Alternating Current
Current Electricity
A) 5V
Show Explanation
B) 1.2V
Show Explanation
C) 0.9V
Show Explanation
D) 0.6V
Show Explanation

Each sentence below has a blank indicating that something has been omitted. Choose the word that best fits in with the meaning of the sentence as a whole.

The sunlight shining through the branches made a _________ pattern on the tiles.

KPK Mock 2
English
Fill in the blank
A) Angina
Show Explanation
B) Basilica
Show Explanation
C) Filigree
Show Explanation
D) Corollary
Show Explanation

Demonstrate correct use of the subject-verb agreement.

I am ____ tea now.

KPK Mock 2
English
Tenses and Sentence Structure
A) taking
Show Explanation
B) takes
Show Explanation
C) took
Show Explanation
D) take
Show Explanation

Select the nearest correct meaning of the given word:

FROWSY

KPK Mock 2
English
Key Vocabulary
A) Disheveled
Show Explanation
B) Arranged
Show Explanation
C) Drowsy
Show Explanation
D) Bluish
Show Explanation

My parents __________ near Lahore.

KPK Mock 2
English
Tenses and Sentence Structure
A) Living
Show Explanation
B) Are living
Show Explanation
C) Lives
Show Explanation
D) Live
Show Explanation

My father ________ us popcorn and orange juice.

KPK Mock 2
English
Tenses and Sentence Structure
A) Buy
Show Explanation
B) Will buy
Show Explanation
C) Bought
Show Explanation
D) Have bought
Show Explanation

Our neighbours have _____ cat and _____ dog.

KPK Mock 2
English
Fill in the blank
A) A…an
Show Explanation
B) A…a
Show Explanation
C) A….the
Show Explanation
D) An….an
Show Explanation

Each sentence below has a blank indicating that something has been omitted. Choose the word that best fits in with the meaning of the sentence as a whole.

When a tree fell on our house, the insurance company adjuster said he would_________the damage and pay us accordingly.

KPK Mock 2
English
Fill in the blank
A) Transmute
Show Explanation
B) Undulate
Show Explanation
C) Wan
Show Explanation
D) Evaluate
Show Explanation

Saba was sick on the bus.

[The underlined prepositional phrase functions as a ____ in this sentence:]

KPK Mock 2
English
Tenses and Sentence Structure
A) Adjunct
Show Explanation
B) Disjunct
Show Explanation
C) Conjunct
Show Explanation
D) Adverbial
Show Explanation

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

AMAZEMENT:

KPK Mock 2
English
Key Vocabulary
A) surprise
Show Explanation
B) appreciation
Show Explanation
C) criticism
Show Explanation
D) praise
Show Explanation

A person who leaves his country and settles in another country is called:

KPK Mock 2
English
Key Vocabulary
A) Emigrant
Show Explanation
B) Immigrant
Show Explanation
C) Migrant
Show Explanation
D) Aborigine
Show Explanation

‘To the letter’ means:

KPK Mock 2
English
Key Vocabulary
A) Cursory
Show Explanation
B) Enveloping a letter
Show Explanation
C) Precisely
Show Explanation
D) Reporting a problem
Show Explanation

It’s raining cats and dogs. So there are ____ cars on the road today.

KPK Mock 2
English
Fill in the blank
A) few
Show Explanation
B) a few
Show Explanation
C) a big number of
Show Explanation
D) a great deal of
Show Explanation

Complete the sentences by choosing the most appropriate option, from the given lettered choices (A to D) below each:
We must ______ back by six o’clock.

KPK Mock 2
English
Fill in the blank
A) Be
Show Explanation
B) Can
Show Explanation
C) Has
Show Explanation
D) Have
Show Explanation

In the following question, four alternative sentences are given. Choose the CORRECT option.

KPK Mock 2
English
Grammar and Punctuation
A) We use to play football when we lived abroad.
Show Explanation
B) We are used to play football when we lived abroad.
Show Explanation
C) We used to play football when we lived abroad.
Show Explanation
D) We have use to play football when we lived abroad.
Show Explanation

I lived on _______ Main Street when I first came to town.

KPK Mock 2
English
Fill in the blank
A) A
Show Explanation
B) An
Show Explanation
C) The
Show Explanation
D) No article is required
Show Explanation

Antonym of Atheist will be:

KPK Mock 2
English
Key Vocabulary
A) Hypnotic
Show Explanation
B) Bane
Show Explanation
C) Believer
Show Explanation
D) Theorist
Show Explanation

In the following question, four alternative sentences are given. Choose the CORRECT one.

KPK Mock 2
English
Grammar and Punctuation
A) Oppressive it was, too, with the heaviness of a storm.
Show Explanation
B) Oppressive it was, too, in the heaviness of a storm.
Show Explanation
C) Oppressive it was, too, up the heaviness of a storm.
Show Explanation
D) Oppressive it was, off the heaviness of a storm.
Show Explanation

In the following question, four alternative sentences are given. Choose the CORRECT option.

KPK Mock 2
English
Grammar and Punctuation
A) I was been to America for a medical check up.
Show Explanation
B) I had being to America for a medical check up.
Show Explanation
C) I have been to America for a medical check up.
Show Explanation
D) I has been to America for a medical check up.
Show Explanation

Statements:

Some blankets are beds. Some pillows are blankets. All beds are pillows.

Conclusions:

I. Some blankets are pillows.

II. Some pillows are beds.

III. Some beds are blankets.

Which of the following is/are most appropriate in the above scenario?

Current Electricity
Alternating Current
Academy Questions
Logical Reasoning
Logical Problems
A) Only I
Show Explanation
B) Only II
Show Explanation
C) Only II and III
Show Explanation
D) I, II and III
Show Explanation

Directions: Read the following information and give answer.

A rat runs 20′ towards East and turns to right, runs 10′ and turns to right runs 9′ and again turns to left, runs 5′ and then turns to left, runs 12′ and finally turns to left and runs 6′ Now, which direction is the rat facing?

Current Electricity
Alternating Current
Academy Questions
Logical Reasoning
Logical Deduction
A) East
Show Explanation
B) West
Show Explanation
C) North
Show Explanation
D) South
Show Explanation

Directions: In the following question, a number sequence is given with one term missing. Choose the correct term that will continue the same pattern and replace the question mark in the given sequence.

2,6,18,54,162,?

Current Electricity
Alternating Current
Academy Questions
Logical Reasoning
Letters and Symbols Series
A) 486
Show Explanation
B) 324
Show Explanation
C) 243
Show Explanation
D) 450
Show Explanation

In this section of logical deduction, the question consists of a brief passage (usually a report containing certain data regarding some social or economic problem), followed by certain inferences based on it. The student is required to analyze the contents (or data) of the passage and grasp the desirable facts from it. Then, student has to consider each of the given inferences in the context of the given passage. decide upon its degree of truth or falsity and then choose the hest alternative provided accordingly.

The water resources of our country are very much underutilized. The main reason of this underutilization is the lack of capital and technology. A large portion of our water resources is wasted due to floods and unwise use of water for irrigation as well as domestic purposes. We can make full use of our water resources by building dams on rivers and by adopting policy of awareness among people not to waste water.

Some people do not use water resources in a judicious way.

Current Electricity
Alternating Current
Academy Questions
Logical Reasoning
Critical Thinking
A) Definitely true
Show Explanation
B) Probably true
Show Explanation
C) Data inadequate
Show Explanation
D) Probably false
Show Explanation

Dependent causes/ Independent causes:
Statement: There has been a high increase in the incidents of atrocities against women in the city during the past few months. The police authority has been unable to nab the culprits who are committing crimes against women.

Current Electricity
Alternating Current
PMC Practice 28
Logical Reasoning
Cause and Effect
A) Statement I is the cause and statement II is its effect.
Show Explanation
B) Statement II is the cause and statement I is its effect
Show Explanation
C) Both the statements I and II are independent causes
Show Explanation
D) Both the statements I and II are effects of independent causes
Show Explanation

Statements:

I. There is an unprecedented increase in the number of young unemployed in comparison to the previous year.
II. A large number of candidates submitted applications against an advertisement for the post of manager issued by a bank.

Current Electricity
Alternating Current
PMC Practice 2
Logical Reasoning
Course of Action
A) Statement I is the cause and statement II is its effect
Show Explanation
B) Statement II is the cause and statement I is its effect
Show Explanation
C) Both statements I and II are independent causes
Show Explanation
D) Both statements I and II are effects of independent causes
Show Explanation

More energy is needed to remove an electron from ____.

KPK Mock 2
Chemistry
A) Half filled subshell
Show Explanation
B) Completely Filled Subshell
Show Explanation
C) Partially filled subshell
Show Explanation
D) Both A and B
Show Explanation

Which equation relates to the first ionization energy of bromine?

KPK Mock 2
Chemistry
Chemical Bonding
Ionization Energy
A) Br(g) → Br-(g) + 1e
Show Explanation
B) Br(g) → Br+(g) + 1e-
Show Explanation
C) 1/2 Br2(g) → Br-(g) + 1e-
Show Explanation
D) 1/2 Br2(g) → Br+(g) + 1e-
Show Explanation

At higher altitude, the boiling point of water is less than 100°C. This is because of:

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Boiling Point and Vapor Pressure
A) Higher atmospheric pressure
Show Explanation
B) Weak hydrogen bonding
Show Explanation
C) No change in atmospheric pressure
Show Explanation
D) Lower atmospheric pressure
Show Explanation

The decrease in atomic radii is very prominent in the ___.

KPK Mock 2
Chemistry
A) Second group
Show Explanation
B) Second period
Show Explanation
C) Higher groups
Show Explanation
D) Higher periods
Show Explanation

The first ionization energy of an atom depends on:

KPK Mock 2
Chemistry
A) Charge on nucleus
Show Explanation
B) Screening effect
Show Explanation
C) Electronic configuration
Show Explanation
D) All of the above
Show Explanation

Which of the following elements has lower first ionization energy?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
Chemical Bonding
Ionization Energy
A) N
Show Explanation
B) O
Show Explanation
C) C
Show Explanation
D) B
Show Explanation

Which of the following solvents favor SN2 reactions?

KPK Mock 2
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) Water
Show Explanation
B) Ammonia
Show Explanation
C) Carbon tetrachloride
Show Explanation
D) Acetic acid
Show Explanation

Which one is more reactive?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
A) Ester
Show Explanation
B) Acid halide
Show Explanation
C) Amide
Show Explanation
D) Acid anhydride
Show Explanation

In “Down Cells”, the cathode is made up of:

KPK Mock 2
Chemistry
Electrochemistry
Electrolysis
A) Graphite
Show Explanation
B) Copper
Show Explanation
C) Iron
Show Explanation
D) Inert material
Show Explanation

The oxidation states of Nitrogen in NH4NO3 are

KPK Mock 2
Chemistry
Electrochemistry
Oxidation Number or State
A) -3 and +5
Show Explanation
B) +5 and-3
Show Explanation
C) -3 & -3
Show Explanation
D) Zero
Show Explanation

Which one of the following gas has the highest rate of diffusion at the same temperature and pressure?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
Diffusion And Effusion
A) HCL
Show Explanation
B) CO2
Show Explanation
C) C2H2
Show Explanation
D) C2H6
Show Explanation

How many elements are there in the third period of the periodic table?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
Periodicity in Elements
Periodic Trends
A) 18
Show Explanation
B) 8
Show Explanation
C) 32
Show Explanation
D) 10
Show Explanation

Which one of the following ions has more electrons than protons and more protons than neutrons?

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
A) D
Show Explanation
B) d-
Show Explanation
C) H-
Show Explanation
D) He
Show Explanation

What is the formula of chloroform?

KPK Mock 2
Chemistry
A) CH3Cl
Show Explanation
B) CH2Cl2
Show Explanation
C) CHCl3
Show Explanation
D) CH2Cl
Show Explanation

Fe+2 will form the most ionic bonds with:

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
Chemical Bonding
Electrovalent or Ionic Bond
A) N-3
Show Explanation
B) S-2
Show Explanation
C) P-3
Show Explanation
D) F-1
Show Explanation

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

Biology
Chromosomes and DNA
The Chemical Nature of DNA
KPK Mock 2
Chemistry
d and f Block Elements
A) O2
Show Explanation
B) O+2
Show Explanation
C) O-2
Show Explanation
D) O2-2
Show Explanation

The molecules of solids possess _______ kinetic energy?

KPK Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids
States of Matter
A) Translational
Show Explanation
B) Vibrational
Show Explanation
C) Both Options A & B are correct
Show Explanation
D) None of these options are correct
Show Explanation

What is the boiling point of “acetic acid”?

KPK Mock 2
Chemistry
Carboxylic Acids and its Derivatives
A) 120°C
Show Explanation
B) 118°C
Show Explanation
C) 110°C
Show Explanation
D) 87°C
Show Explanation

Which group when attached to benzene will increase its reactivity:

KPK Mock 2
Chemistry
Hydrocarbons
Reactions of Benzene
A) –NH4+
Show Explanation
B) –NH3
Show Explanation
C) –C≡N
Show Explanation
D) –COR
Show Explanation

What is the color of iodoform precipitates?

KPK Mock 2
Chemistry
Alcohols, Phenols and Ethers
A) White
Show Explanation
B) Black
Show Explanation
C) Reddish
Show Explanation
D) Yellow
Show Explanation

A crystal is made up of ___.

KPK Mock 2
Chemistry
A) Atoms
Show Explanation
B) Ions
Show Explanation
C) Molecules
Show Explanation
D) All of these
Show Explanation

The increase in atomic radii in ______ is due to an increase in the number of shells and the screening effect.

KPK Mock 2
Chemistry
Chemical Bonding
Energetics of Bond Formation
A) Groups
Show Explanation
B) Periods
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C) Both A & B are correct
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D) None of these are correct
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Aldehydes and ketones can be obtained by the ____.

KPK Mock 2
Chemistry
A) Reduction of alcohol
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B) Oxidation of alcohol
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C) Dehydration of alcohol
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D) Hydrolysis of alcohol
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Which of the following is an example of “tertiary alcohols”?

KPK Mock 2
Chemistry
Alcohols, Phenols and Ethers
A) 2-methyl-3-ethylpentane
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B) 3-ethyl-3-hexanol
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C) 2-methyl-4-hexanol
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D) Isopropyl alcohol
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