With reference to “water vapour”, which of the following statements is/are correct? It is a gas, the amount of which decreases with altitude. Its percentage is maximum at the poles.

1 only Water vapour is heavily concentrated in the lower troposphere and at the equator, decreasing sharply as you move higher in altitude or closer to the poles. Statement 1 is correct because water vapour is confined largely to the lower atmosphere (the troposphere) where surface water sources exist and temperatures are warm enough to sustain evaporation. Statement 2 is incorrect because polar regions have extremely cold, dry air, meaning they actually hold the lowest water vapour content on Earth (sometimes nearly 0%). In contrast, the tropics (around the equator) have the highest concentration of water vapour (up to 4% of the air by volume) due to intense heating and maximum evaporation over the warm oceans.

Atmospheric Water Vapour | | Chary's Lectures on PYQs & Polity

Geography › Physical Geography (World) Year 2024 Q. 1 9 of 64 in this theme

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

It is a gas, the amount of which decreases with altitude.
Its percentage is maximum at the poles.

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2