The dominance of nitrogen among permanent gases indicates which characteristic of air?
Answer and explanation
Correct answer: Most of air is chemically relatively inert
The governing concept is the relationship between composition and chemical behaviour. Nitrogen forms about 78% of dry air and is relatively unreactive under ordinary conditions, so its dominance means that most air is not readily combustible or chemically aggressive. Oxygen supports combustion but is not the majority gas. Water vapour is variable rather than permanent, and air is a mixture, not pure oxygen. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
Most of air is chemically relatively inert
Why is this the correct answer?
The governing concept is the relationship between composition and chemical behaviour. Nitrogen forms about 78% of dry air and is relatively unreactive under ordinary conditions, so its dominance means that most air is not readily combustible or chemically aggressive. Oxygen supports combustion but is not the majority gas. Water vapour is variable rather than permanent, and air is a mixture, not pure oxygen. Therefore option A is correct.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Depreciation, Provisions, and Reserves. Topic: Covers SLM/WDV methods and accounting adjustments.
