Chemistry - Study Mode

[#461] The chemical name of 'laughing gas' is
Correct Answer

(D) Nitrous oxide

Explanation

Solution: The chemical name of 'laughing gas' is nitrous oxide.

[#462] An important green-house gas other than methane being produced from the agricultural fields is
Correct Answer

(A) Nitrous oxide

Explanation

Solution: Nitrous oxide is produced by combustion of fossil fuels, livestock wastes, breakdown of nitrogenous fertilizers in soil, nitrate contaminated water, nylon production and other industrial processes.

[#463] The gas which is mainly responsible for the green house effect is:
Correct Answer

(C) Carbon dioxide

Explanation

Solution: Carbon dioxide (CO 2 ) is the primary greenhouse gas emitted through human activities.

[#464] Chernobyl disaster is the result of pollution by
Correct Answer

(D) Radioactive waste

Explanation

Solution: The Chernobyl accident in 1986 was the result of a flawed reactor design that was operated with inadequately trained personnel. The resulting steam explosion and fires released at least 5% of the radioactive reactor core into the environment, with the deposition of radioactive materials in many parts of Europe.

[#465] ‘Aerosol’ is known as
Correct Answer

(A) Suspended solid particles in air

Explanation

Solution: An aerosol (abbreviation of "aero-solution") is a suspension of fine solid particles or liquid droplets in air or another gas.