Question : Which of the following atmospheric gases constitute greenhouse gases?
a. Carbon dioxide
b. Nitrogen
c. Nitrous oxide
d. Water vapour
Select the correct answer using the codes given below:
Option 1: a, c and d
Option 2: a and d
Option 3: a and c
Option 4: a, b and d
Correct Answer: a, c and d
Solution : The correct answer is a, c and d.
Earth's atmosphere is transparent to incoming short-wave solar radiation and opaque to long-wave terrestrial radiation. These terrestrial radiations are trapped by the greenhouse gases leading to an increase in the temperature of the earth. This phenomenon is known as the Green House effect. Carbon dioxide, methane, nitrous oxide, sulphur hexafluoride, hydrofluorocarbons, perfluorocarbons, water vapours etc. are various greenhouse gases.
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