CDS Questions

GP Motion Force

If the distance S covered by a moving car in rectilinear motion with a speed v in time t is given by S = vt, then the car undergoes

  1. uniform velocity
  2. uniform acceleration
  3. non-uniform acceleration
  4. non-uniform velocity

GP Work Energy

Two cars A and B have masses mA and mB respectively, with mA > mB. Both the cars are moving in the same direction with equal kinetic energy. If equal braking force is applied on both, then before coming to rest

  1. A will cover a greater distance
  2. B will cover greater distance
  3. both will cover the same distance
  4. distance covered by them will depend on their respective velocities

GP Gravitation

Planet A has double the radius than that of planet B. If the mass of planet A is 4 times heavier than the mass of planet B, which of the following statements regarding weight of an object is correct?

  1. Heavier on Planet B than on Planet A
  2. Same on both the Planets
  3. Cannot be measured on Planet B
  4. Heavier on Planet A than on Planet B

GP Motion Force

A bullet is fired vertically up from a 400 m tall tower with a speed 80 m/s. If g is taken as 10 m/s2, the time taken by the bullet to reach the ground will be

  1. 24 s
  2. 20 s
  3. 16 s
  4. 8 s

GB Cells Tissues

Within an animal cell, the most abundant inorganic constituent of protoplasm is

  1. phosphate
  2. water
  3. sodium and potassium salt
  4. iron

GB Life Processes

The main thinking part of the brain is

  1. hypothalamus
  2. midbrain
  3. hindbrain
  4. forebrain

GB Life Processes

Which one of the following is not a function of liver?

  1. Production of urea
  2. Absorption of food and excess water from the undigested food
  3. Destruction of dead and worn-out red blood cells
  4. Conversion of glucose into glycogen

GB Reproduction Heredity

Which one of the following is not a part of female reproductive system?

  1. Cervix
  2. Vagina
  3. Urethra
  4. Fallopian tube

GB Food Nutrition

Balanced diet should have approximately

  1. 3/5 protein, 1/5 fat and 1/5 carbohydrate
  2. 1/5 protein, 1/5 fat and 3/5 carbohydrate
  3. 1/2 protein, 1/4 fat and 1/4 carbohydrate
  4. 1/5 protein, 3/5 fat and 1/5 carbohydrate

GB Health

After diagnosis of disease in a person, the doctor advises the patient iron and folic acid tablets. The person is suffering from

  1. goitre
  2. osteoporosis
  3. anaemia
  4. protein-energy malnutrition

GC Atomic Structure

Which one of the following is the correct electronic configuration of chlorine

  1. 7, 8, 2
  2. 2, 8, 7
  3. 2, 8, 8
  4. 2, 7, 8

GC Atomic Structure

The distribution of electrons into different orbits of an atom, as suggested by Bohr, is

  1. 2 electrons in the K-orbit, 8 electrons in the L-orbit, 32 electrons in the M-orbit
  2. 2 electrons in the K-orbit, 8 electrons in the L-orbit, 16 electrons in the M-orbit
  3. 2 electron in the K-orbit, 6 electrons in the L-orbit, 18 electrons in the M-orbit
  4. 2 electrons in the K-orbit, 8 electrons in the L-orbit, 18 electrons in the M-orbit

GC Acids Bases Salts

In the reaction ZnO + C → Zn + CO, 'C' acts as

  1. an acid
  2. a base
  3. an oxidising agent
  4. a reducing agent

GC Acids Bases Salts

Which of the following acids is a mineral acid

  1. Citric acid
  2. Ascorbic acid
  3. Tartaric acid
  4. Hydrochloric acid

GC Metals Non-Metals

Dihydrogen can be prepared on a commercial scale by the action of steam on hydrocarbons, when a mixture of CO and H2 gas is formed. It is known as

  1. industrial gas
  2. producer gas
  3. fuel gas
  4. water gas

GC Metals Non-Metals

When carbon dioxide is passed through lime water, the solution turns milky, but, on prolonged passage, the solution turns clear. This is because

  1. the calcium carbonate formed initially is converted to soluble calcium bicarbonate on passage of more carbon dioxide
  2. the calcium bicarbonate formed initially is converted to soluble calcium carbonate on passage of more carbon dioxide
  3. the reaction is reversible and lime water is regenerated
  4. the initially formed insoluble compound is soluble in carbonic acid

GC Metals Non-Metals

What is the main constituent of a Pearl?

  1. Calcium carbonate and magnesium carbonate
  2. Calcium carbonate only
  3. Calcium sulphate only
  4. Calcium oxide and calcium sulphate

GP Measurement

A nauticle mile is equal to

  1. 5060 feet
  2. 5280 feet
  3. 6060 feet
  4. 6080 feet

GP Light

A person standing in front of a plane mirror approaches the mirror by 40 cm. The new distance between the person and his image in the plane mirror is

  1. 60 cm
  2. 1.4 m
  3. 1.2 m
  4. 2.0 m

GP Electricity

If two conducting spheres are separately charged and then brought in contact

  1. the total charge of the two spheres is conserved
  2. both the total energy and the total charge are conserved
  3. the final potential is always the mean of the original potential of the two spheres
  4. the total energy of the two spheres is conserved

GP Electricity

When you pull out the plug connected to an electrical appliance, you often observe a spark. To which property of the appliance is this related?

  1. Resistance
  2. Wattage
  3. Capacitance
  4. Inductance

GP Electricity

Electricity is produced through dry cell from

  1. Nuclear Energy
  2. Mechanical Energy
  3. Chemical Energy
  4. Thermal Energy

GB Life Processes

Which of the statements given below are correct?

  1. A person having blood group 'A' can donate blood to persons having blood group 'A' and blood group 'AB'.
  2. A person having blood group 'AB' can donate blood to persons having blood groups 'A', 'B', 'AB' or 'O'.
  3. A person with blood group 'O' can donate blood to persons having any blood group.
  4. A person with blood group 'O' can receive blood from the person of any of the blood groups.

Select the correct answer using the code given below:

  1. 1 and 3 only
  2. 3 and 4 only
  3. 1 and 2 only
  4. 1, 2, 3 and 4

GB Life Processes

The gastrointestinal hormones namely secretin and cholecystokinin secreted by duodenal epithelium activate respectively which organs to discharge their secretions?

  1. stomach and small intestine
  2. gall bladder and stomach
  3. pancreas and gall bladder
  4. pancreas and stomach

GB Health

Dual-energy X-ray absorptiometry (DEXA) is used to measure

  1. spread of solid tumour
  2. bone density
  3. extent of brain haemorrhage
  4. ulcerous growth in blood

GB Health

Sickle-cell anaemia is a disease caused due to the abnormality in?

  1. blood plasma composition
  2. red blood cells
  3. white blood cells
  4. thrombocytes

GB Health

Which one of the following diseases in humans can spread through air?

  1. Goitre
  3. Tuberculosis
  4. Dengue

GB Cells Tissues

Which of the following are found in both plant and animal cells?

  1. Cell membrane, Chloroplast, Vacuole
  2. Cell wall, Nucleus, Vacuole
  3. Cell membrane, Cytoplasm, Nucleus
  4. Cell wall, Chloroplast, Cytoplasm

GB Reproduction Heredity

Which of the following statements about sexual reproduction in flowering plants are correct?

  1. Stamen is present in the centre of a flower.
  2. Stamen produces pollen grains in the ovary.
  3. The swollen bottom part of carpel is the ovary.
  4. The fusion of germ cells gives rise to zygote.

Select the correct answer using the code given below

  1. 2 and 4 only
  2. 1 and 3 only
  3. 2, 3 and 4 only
  4. 1, 2, 3 and 4

GB Living Organisms

In dry regions, the leaf size of a tree becomes smaller. It is so to

  1. maintain natural growth
  2. protect plant from animals
  3. reduce metabolism
  4. reduce transpiration

GP Motion Force

Newton's law of motion cannot be applicable to the particles moving at a speed comparable to the speed of

  1. light
  2. sound
  3. rocket
  4. bullet train

GC Matter

Bose-Einstein Condensate (BEC) is formed by cooling a gas of extremely low density, about one-hundred-thousandth the density of normal air. This is treated as

  1. II state of matter
  2. III state of matter
  3. IV state of matter
  4. V state of matter

GP Measurement GP Motion Force

Automobiles are fitted with a device that shows the distance travelled. Such a device is known as

  1. Speedometer
  2. Cathetometer
  3. Odometer
  4. Lactometer

GC Metals Non-Metals

Which one of the following non-metals is present in solid state?

  1. Bromine
  2. Boron
  3. Krypton
  4. Radon

GC Acids Bases Salts

Which one of the following is a reducing substance?

  1. Oxygen
  2. Iron
  3. Potassium permanganate
  4. Potassium dichromate

GC Metals Non-Metals

Which one of the following materials is not present in gun powder?

  1. Sulphur
  2. Charcoal
  3. Potassium nitrate
  4. Barium sulphate

GB Food Nutrition

Which one among the following is the richest source of vitamin C?

  1. Apple
  2. Banana
  3. Amla
  4. Papaya

GB Health

Night blindness is caused by the deficiency of

  1. Vitamin C
  2. Vitamin A
  3. Vitamin K
  4. Vitamin B

GP Magnetism

Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice versa?

  1. Generator
  2. Motor
  3. Transformer
  4. Vibrator

GP Light

An optical illusion which occurs mainly in deserts during hot summer is based on the principle of

  1. Reflection
  2. Interference
  3. Dispersion
  4. Total internal reflection

GP Magnetism

At which place Earth’s magnetic field becomes horizontal?

  1. Magnetic meridian
  2. Magnetic equator
  3. Geographical pole
  4. Tropic of Cancer

GP Motion Force

The speed of a car travelling on a straight road is listed below at successive intervals of 1 s:
Time (s)        0 1 2 3 4
Speed (m/s)  0 2 4 6 8

Which of the following is/are correct?

The car travels

  1. with a uniform acceleration of 2 m/s2.
  2. 16 m in 4 s.
  3. with an average speed of 4 m/s.

Select the correct answer using the code given below:

  1. 1, 2 and 3
  2. 2 and 3 only
  3. 1 and 2 only
  4. 1 only

GP Sound Waves

The speed of a body that has Mach number more than 1 is

  1. supersonic
  2. subsonic
  3. 300 m/s
  4. about 10 m/s

GC Acids Bases Salts

Consider the following reaction:

CH4 + 2O2 → CO2 + 2H2O

Which of the following about the reaction given above is/are correct?

  1. Carbon is oxidized.
  2. Hydrogen is oxidized.
  3. Hydrogen is reduced.
  4. Carbon is reduced.

Select the correct answer using the code given below:

  1. 1 only
  2. 1 and 2 only
  3. 2 and 3 only
  4. 2 and 4 only

GC Acids Bases Salts

The desirable range of pH for drinking water is

  1. 6.5 to 8.5
  2. 5.0 to 6.5
  3. 6.5 to 7.0
  4. 7.0 to 8.5

GS Environment

Which one of the following is a cause of acid rains?

  1. Ozone
  2. Ammonia
  3. Sulphur dioxide
  4. Carbon monoxide

GP Sound Waves

Which one of the following waves does not belong to the category of the other three?

  1. X-rays
  2. Microwaves
  3. Radio waves
  4. Sound waves

GP Sound Waves

Bats detect obstacles in their path by receiving the reflected

  1. Infrasonic waves
  2. Ultrasonic waves
  3. Radio waves
  4. Microwaves

GP Light

A rainbow is produced due to which one of the following phenomena?

  1. Dispersion of light
  2. Interference of light
  3. Diffraction of light
  4. Scattering of light by atmospheric dust

GC Acids Bases Salts

Why is potassium permanganate used for purifying drinking water?

  1. It kills germs
  2. It dissolves the impurities
  3. It is a reducing agent
  4. It is an oxidizing agent