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Standard VIII
Chemistry
Combustion
Question

A chemical process in which a substance reacts with oxygen to give off heat is called:
  1. Both A and B
  2. ignition
  3. None of the above
  4. combustion

A
ignition
B
combustion
C
Both A and B
D
None of the above
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Solution
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A chemical process in which a substance reacts with oxygen to give off heat is called combustion. The substance that undergoes combustion is known as a combustible substance.
The lowest temperature at which a substance catches fire is called its ignition temperature.
So the correct option is B.

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