General science - Multiple Choice Questions (MCQs) – Page 7

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Recent MCQs

Which of the following trees is dangerous for environment ?

  1. Neem
  2. Eucalyptus
  3. Babool
  4. Banana
General science

Refrigeration helps in food preservation by

  1. killing of germs (bacteria)
  2. reducing the rate of biochemical reaction
  3. destroying the enzyme action
  4. sealing food with a layer of ice
General science

Which one of the following salts contributes maximum to the salinity of sea water?

  1. Calcium sulphate
  2. Magnesium chloride
  3. Magnesium sulphate
  4. Sodium chloride
General science

Gas engine was invented by:

  1. Diesel
  2. Davy
  3. Daimler
  4. Charles
General science

Cause of AIDS is

  1. Bacteria
  2. Fungus
  3. Virus
  4. Amoeba
General science

Which color combination is best suited for umbrella to protect from sunlight (stinter)?

  1. White on the upper and black in the inner side
  2. Black on the upper and white in the inner side
  3. Only black
  4. Only white
General science

The gas used in discharge tubes for optical decoration and advertising is?

  1. Carbon Dioxide
  2. Ammonia
  3. Sulphur Dioxide
  4. Neon
General science

The disease caused by nematodes is:

  1. Filaria
  2. Fluorosis
  3. Encephalitis
  4. Leprosy
General science

A third allotrope of Carbon, Fullerene was discovered by a team of 3 scientists who were awarded Chemistry Nobel Prize. Identify the one who was not a member of that team.

  1. H.W. Kroto
  2. R.F. Curl
  3. R.E. Smalley
  4. Feyman
General science

The smallest unit of length is

  1. micron
  2. nanometre
  3. angstrom
  4. fermi-metre
General science

Triple antigen is given to a child to prevent:

  1. Polio, smallpox, diphtheria
  2. Diphtheria, whooping cough, tetanus
  3. Smallpox, whooping cough, tetanus
  4. Polio, tetanus, whooping cough
General science

Which hormone is injected to cows and buffaloes to make the milk descend to the udders?

  1. Somatotropin
  2. Oxytocin
  3. Interferon
  4. Insulin
General science

Accumulation of which one of the following in the muscles leads to fatigue?

  1. Lactic acid
  2. Benzoic acid
  3. Pyruvic acid
  4. Uric acid
General science

A cut diamond shines brilliantly due to:

  1. some inherent property
  2. total internal reflection
  3. its molecular structure
  4. absorption of light
General science

In cold countries alcohol is preferred to mercury as a thermometric liquid because:

  1. alcohol has a lower freezing point
  2. alcohol is a better conductor of heat
  3. alcohol is cheaper than mercury
  4. the world production of alcohol is greater than that of mercury
General science

Which of the following is not a greenhouse gas?

  1. Carbon dioxide
  2. Methane
  3. Oxygen
  4. Water vapor
General science

The normal temperature of human body is:

  1. 98.4°F
  2. 98°F
  3. 98.8°F
  4. None of the above
General science

Which one of the following Thermometers is known as pyrometer?

  1. Thermo-electric thermometers
  2. Radiation thermometers
  3. Gas thermometers
  4. Liquid thermometers
General science

Consider the following statements in respect of a jet engine and a rocket:

1) A jet engine uses the surrounding air for it oxygen supply and so is unsuitable for motion in space.
2) A rocket carries its own supply of oxygen in the gas form as fuel.

Which of the above statements is/are correct?

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

Which of the following has the highest velocity?

  1. Cosmic rays
  2. Light
  3. Electron
  4. Supersonic wave
General science

The blood pressure of an individual is 140 mm Hg. In this statement 'Hg' refers to:

  1. Hydrogen
  2. Mercury
  3. Hygrometer
  4. Heliograph
General science

Spring Tide occurs:

  1. When the sun and moon are in a straight line
  2. When the sun and moon make a right angle
  3. When a strong wind blows
  4. When the night is very cold
General science

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

A. Carbon monoxide - 1. Damage to liver and kidney
B. Oxides of Nitrogen - 2. Cancer
C. Soil particles - 3. Ailments related to breathing
D. Lead - 4. Central nervous system

Code:
A B C D

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

Arrange the following substances in chronological order of their first synthesis in lab:

1. Black gold
2. Fullerene
3. Graphene
4. Kevlar

Select correct answer from the codes given below:
Codes:

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