Why is water vapour treated separately while describing the composition of dry air?
Answer and explanation
Correct answer: Because water vapour is not included in dry air
Dry air is defined as air considered without water vapour, so its composition is usually expressed using the relatively stable proportions of nitrogen, oxygen, argon, and other permanent or nearly permanent gases. Water vapour is excluded because it is highly variable, commonly ranging from very small amounts to several percent depending on temperature and humidity. Hence A is correct. It is not a permanent gas, it is gaseous rather than only solid, and it is not generally more abundant than nitrogen.
Frequently asked questions
What is the correct answer to this question?
Because water vapour is not included in dry air
Why is this the correct answer?
Dry air is defined as air considered without water vapour, so its composition is usually expressed using the relatively stable proportions of nitrogen, oxygen, argon, and other permanent or nearly permanent gases. Water vapour is excluded because it is highly variable, commonly ranging from very small amounts to several percent depending on temperature and humidity. Hence A is correct. It is not a permanent gas, it is gaseous rather than only solid, and it is not generally more abundant than nitrogen.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting.
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