Question

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12. Which of the following is an endothermic reaction?
(a) Burning of coal
(b) Decomposition of vegetable matter into compost​

Answer 1

Answer:

The decomposition of calcium carbonate is an example of an endothermic reaction because decomposition of calcium carbonate requires a large amount of energy to proceed. While burning of coal, decomposition of vegetable matter into compost, and process of respiration gives heat and energy along with the products.