Which gas is generally necessary for a combustion reaction in air?
Answer and explanation
Correct answer: ऑक्सीजन
Combustion is a chemical reaction in which a fuel reacts with oxygen and usually releases heat and sometimes light. Thus, oxygen is generally necessary for burning in air, making option A correct. Carbon dioxide and water vapour do not support ordinary combustion, while nitrogen is largely unreactive under these conditions and mainly dilutes the oxygen in air.
Frequently asked questions
What is the correct answer to this question?
ऑक्सीजन
Why is this the correct answer?
Combustion is a chemical reaction in which a fuel reacts with oxygen and usually releases heat and sometimes light. Thus, oxygen is generally necessary for burning in air, making option A correct. Carbon dioxide and water vapour do not support ordinary combustion, while nitrogen is largely unreactive under these conditions and mainly dilutes the oxygen in air.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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