Why is the vertical distribution of water vapour considered different from that of permanent gases?
Answer and explanation
Correct answer: Because its main source is surface evaporation and its concentration decreases rapidly with height
The governing concept is source-controlled atmospheric distribution. Water vapour enters the atmosphere mainly through evaporation and transpiration near Earth’s surface. As air rises, temperature generally falls, condensation and precipitation remove moisture, and the amount of vapour decreases sharply with altitude. Permanent gases are comparatively well mixed. Thus option D gives the correct reason.
Frequently asked questions
What is the correct answer to this question?
Because its main source is surface evaporation and its concentration decreases rapidly with height
Why is this the correct answer?
The governing concept is source-controlled atmospheric distribution. Water vapour enters the atmosphere mainly through evaporation and transpiration near Earth’s surface. As air rises, temperature generally falls, condensation and precipitation remove moisture, and the amount of vapour decreases sharply with altitude. Permanent gases are comparatively well mixed. Thus option D gives the correct reason.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
