Question

which of the following reaction an endothermic reaction?
1)burning of coal
2) decomposition of vegetable matter into compound
3) process of respiration
4) decomposition of calcium carbonate to form quick lime and co2​

Answer 1

Answer:

option 2 decomposition of vegetables matter

Answer 2

Answer:

(4) decomposition of CaCO3 to form CaO and CO2.

Explanation:

This decomposition reaction is endothermic. CaCO3 is heated and it goes through thermal decomposition to break into products like CO2 and CaO.

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