Question

Which of the following reactions is an endothermic reaction?
i) Burning of coal.
ii) Decomposition of vegetable matter into compost.
iii) Process of respiration.
iv) Decomposition of calcium carbonate to form quick lime and carbon dioxide.
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Answer 1

Answer:

burning of coal

I hope its help u

Answer 2

Answer:

option 4 is the endothermic reaction