An endothermic reaction is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat. Which of the following reactions is endothermic?
اینڈوتھرمک رد عمل ایک کیمیائی رد عمل ہے جو عام طور پر گرمی کی شکل میں ، اس کے گردونواح سے توانائی کو جذب کرتا ہے۔ مندرجہ ذیل میں سے کون سا رد عمل اینڈوتھرمک ہے؟
Answer: CaCO3 → CaO + CO2
Explanation
CaCO₃ → CaO + CO₂
This reaction absorbs heat to break calcium carbonate into calcium oxide and carbon dioxide.
It is a classic endothermic decomposition reaction, requiring continuous heating to proceed.
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