Environmental Science - Study Mode

[#611] Which of the following is not a green house gas?
Correct Answer

(D) SF 6

Explanation

Solution: The principal greenhouse gases (GHGs) are carbon dioxide (CO 2 ), water vapour (H 2 O), nitrous oxide (N 2 O), methane (CH 4 ) and ozone (O 3 ).

[#612] The gas responsible for the greenhouse effect on Venus is:
Correct Answer

(A) Carbon dioxide (CO 2 )

Explanation

Solution: The Venusian atmosphere is mainly made up of carbon dioxide, a greenhouse gas. On Earth, carbon dioxide makes up only a tiny fraction of the atmosphere. However, man-made emissions have caused carbon dioxide concentrations here to increase by about 30% since pre-industrial times.

[#613] Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth's atmosphere?
Correct Answer

(D) Water vapor and carbon dioxide

Explanation

Solution: Greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth's surface and reradiating it back to Earth's surface, thus contributing to the greenhouse effect. Carbon dioxide, methane, and water vapour are the most important greenhouse gases.

[#614] The combination of nitrogen oxides and hydrocarbons in the presence of the sunlight causes
Correct Answer

(B) Smog

Explanation

Solution: The combination of nitrogen oxides and hydrocarbons in the presence of the sunlight causes smog.

[#615] The Residential and Commercial wastes mainly consist of:
Correct Answer

(C) Packaging materials

Explanation

Solution: The Residential and Commercial wastes mainly consist of packaging materials.