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.

Answer 1

Answer:

3 , 4...................

Answer 2

Answer:

iv) decomposition of calcium carbonate to form quick lime and carbon dioxide