'Mesothelioma' is caused by toxicity of

• Arsenic
• Lead
• Mercury
• Asbestos
Correct Option: D  [ Asbestos ]

Remark:

Which of the following will not cause any atmospheric pollution ?

• Hydrogen
• Sulphur dioxide
• Carbon dioxide
• Carbon monoxide
Correct Option: A  [ Hydrogen ]

Remark:

Which gas is used as fire extinguisher?

• Nitrogen dioxide
• Carbon monoxide
• Carbon dioxide
• Nitrous oxide
Correct Option: C  [ Carbon dioxide ]

Remark:

A solar eclipse occurs when the :

• earth comes between the Sun and the Moon
• Sun comes between the earth and the moon
• Moon is at right angle to the earth
• Moon comes between the Sun and the Earth
Correct Option: D  [ Moon comes between the Sun and the Earth ]

Remark:

The brain of any computer system is:

• Control Unit
• Monitor
• CPU
• ALU
Correct Option: C  [ CPU ]

Remark:

Which of the following diseases is not caused by bacteria?

• Cholera
• Typhoid
• Tuberculosis
• Chickungunya
Correct Option: D  [ Chickungunya ]

Remark:

What is condensation?

• Change of Solid into liquid
• Change of vapour into liquid
• Change of Liquid into Gas
• None of these
Correct Option: B  [ Change of vapour into liquid ]

Remark:

The physical quantity which is measured as Kg m/s² is:

• Work
• Power
• Force
• Motion
Correct Option: C  [ Force ]

Remark:

Helium is preferred to hydrogen in air balloons because it:

• is cheaper
• is less dense
• has greater lifting power
• does not form an explosive mixture with air
Correct Option: D  [ does not form an explosive mixture with air ]

Remark:

The first nuclear test conducted by India under the code name of "Smiling Buddha" was in the year:

• 1973
• 1974
• 1975
• 1976
Correct Option: B  [ 1974 ]

Remark: