UPSC » With reference to “water vapour”, which of the following statements is/are correct?

With reference to “water vapour”, which of the following statements is/are correct?

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Question:

With reference to "water vapour”, which of the following statements is/are correct?
1. It is a gas, the amount of which decreases with altitude.
2. Its percentage is maximum at the poles.
Select the answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2