Question

☆Choose the odd ones and give the correct answer.

•Respiration in living organism

•Burning of leaves

•Burning of fuels

•Hammering of Metals
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Answer 1

Answer:

hammering of metals is correct

Answer 2

Hammering of metals cause in other two the burning is taking place and which is also known as combustion of leves and fuels . And talking about respiration, it is also a type of combustion but a slow one i.e. respiration is a slow combustion.
Hope this helps.