General science - Multiple Choice Questions (MCQs) – Page 16

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Recent MCQs

Nitrogen is NOT an essential constituent of:

  1. Chlorophyll
  2. RNA
  3. DNA
  4. Carbohydrate
General science

SONAR is mostly used by:

  1. Astronauts
  2. Doctors
  3. Engineers
  4. Navigators
General science

Harmful ultra-violet radiation coming from the sun can cause:

  1. Liver cancer
  2. Brain cancer
  3. Oral cancer
  4. Dermal cancer
General science

Match List I with List II and select the correct answer from the code given below:
List-I - List-II

A. Dry Ice - 1. Treatment of Cancer
B. Gene therapy - 2. Freezing living bodies to be revived later
C. Cryonics - 3. Solid carbon dioxide
D. Cobalt-60 - 4. Treatment of blood diseases

A B C D

  1. 1 2 3 4
  2. 4 3 2 1
  3. 3 4 2 1
  4. 2 1 4 3
General science

Match List-I with List-II and select the correct answer from the codes given below the lists:
List-I - List-II

A. Stethoscope - 1. To measure intensity of light
B. Sphygnomanometer - 2. to check purity of gold
C. Caratometer - 3. to hear heart sound
D. Lux meter - 4. to measure blood pressure

Code:
A B C D

  1. 1 2 3 4
  2. 4 3 2 1
  3. 3 4 2 1
  4. 2 1 4 3
General science

Automatic wrist watches get energy from:

  1. Cranial spasms
  2. Battery
  3. From liquid crystal
  4. From the various movements of our hands
General science

Given:

1. Blood cells
2. Bone cells
3. Hair strands
4. Saliva

Samples taken for DNA testing in criminal investigation can be

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

Desert dwelling animals are called -

  1. Arboreal animals
  2. Terrestrial animals
  3. Fossorial animals
  4. Xericoles animals
General science

Consider the following statements and select the correct answer from the code given below:

1. Brass is a compound of copper and zinc.
2. Magnetite is the most important ore of aluminium.
3. Amalgam is that substance which basically contains mercury.
4. Potassium nitrate is one of the essential chemicals used in photography.

Code:

  1. 1 and 2
  2. 1 and 3
  3. 2 and 3
  4. 1, 3 and 4
General science

Which one of the following fibre is not a product of plant stem:

  1. Flax
  2. Hemp
  3. Jute
  4. Cotton
General science

Heavy water is a type of

  1. Coolant
  2. Moderator
  3. Ore
  4. Fuel
General science

'Cloves' are:

  1. nodules of stem
  2. leaves
  3. nodules of roots
  4. dried flowers
General science

Which of the following is a semi-conductor?

  1. Plastic
  2. Aluminium
  3. Wood
  4. Germanium
General science

What is the function of the thermostat in a refrigerator?

  1. To lower the temperature
  2. To increase the freezing point
  3. To maintain constant temperature
  4. To decrease the melting point
General science

Nutraceuticals are products having:

  1. Nutrient vitamin and minerals
  2. Nutrient protein and fatty acids
  3. Nutritional and toxic effects
  4. Nutritional and medicinal effects
General science

Which of the following laser types is used in a laser printer?

  1. Dye laser
  2. Semiconductor laser
  3. Excimer laser
  4. Gas laser
General science

What is Jarvik-7?

  1. Electronic foot
  2. Pacemaker
  3. Artificial heart
  4. Artificial eye
General science

The atoms, in which the number of protons is same but the number of neutrons is different, are known as:

  1. Isotopes
  2. Isobars
  3. Isomers
  4. Isotones
General science

Stars obtain their energy from:

1. Nuclear fusion
2. Gravitational contraction
3. Chemical reaction
4. Nuclear fission

Select your answer from the codes given below:
Codes:

  1. 1 and 2
  2. 1, 2 and 3
  3. 1 and 4
  4. 2 and 4
General science

Leukaemia is a type of cancer in which there is abnormal increase in the number of

  1. Bone cells
  2. Platelets
  3. Red blood cells
  4. White blood cells
General science

Which of the following statements about enzymes is/are correct?

1. They are biocatalysts.
2. They perform their action on the site where they are produced.

Select the correct answer from the codes given below:
Codes:

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2
General science

Which of the following is/are used as bio-fertilisers? Select the correct answer from the codes given below:

1. Azolla
2. Blue Green Algae
3. Alfalfa
4. Nitrolim

Codes:

  1. 1 and 2
  2. 1, 2 and 4
  3. 2, 3 and 4
  4. 1, 2 and 3
General science

The Mutation Theory of Evolution was enunciated by

  1. Huxley
  2. Darwin
  3. Lamarck
  4. Hugo de Vries
General science

Which one of the following organic acids is abundant in grapes, tamarind (इमली) and banana?

  1. Acetic acid
  2. Citric acid
  3. Lactic acid
  4. Tartaric acid
General science