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Q.

Which of these is/are not true for combustion?


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a

Oxygen is formed

b

Carbon dioxide is formed

c

Oxygen is used up

d

Nitrogen does not change 

answer is A.

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Detailed Solution

The statement that oxygen is formed during combustion is not true.
Combustion is a process that involves the burning of a particular substance in the presence of oxygen. This results in the formation of carbon dioxide, water, and a lot of heat. Nitrogen is not used in this reaction. Instead, oxygen is required for combustion.
 
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