How can the presence of water vapour affect the daily temperature range?
Answer and explanation
Correct answer: It can reduce temperature range by retaining heat
Water vapour is a greenhouse gas and absorbs some outgoing infrared radiation. In a humid atmosphere, this retained energy can reduce radiational cooling at night, so the minimum temperature may remain higher and the difference between daytime maximum and nighttime minimum can become smaller. Therefore option A is correct. The other statements describe impossible chemical changes or an exaggerated absolute claim.
Frequently asked questions
What is the correct answer to this question?
It can reduce temperature range by retaining heat
Why is this the correct answer?
Water vapour is a greenhouse gas and absorbs some outgoing infrared radiation. In a humid atmosphere, this retained energy can reduce radiational cooling at night, so the minimum temperature may remain higher and the difference between daytime maximum and nighttime minimum can become smaller. Therefore option A is correct. The other statements describe impossible chemical changes or an exaggerated absolute claim.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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