Question

Which of the following is an endothermic reaction
a-burning of coal
b- decomposition of vegetable matter into compost
c-process of respiration
d-decomposition of calcium carbonate to form quick lime and carbon dioxide

Answer 1

Answer :

The endothermic reaction is (iv) decomposition of calcium carbonate to form quick-lime and carbon dioxide.

Explanation: In this reaction, calcium carbonate decompose in the presence of energy formed by the heat (thermal decomposition).

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