Question

decomposition reaction requires energy either in the form of heat or light or electricity for breaking down the reactants .some examples of decomposition reaction are given below
1. calcium carbonate on heating decomposes to give calcium oxide and carbon dioxide
2. silver chloride decomposes to give silver metal and chlorine gas when it is exposed to air​

Answer 1

Answer:

1)When CaCO3 is heated, the calcium oxide called quicklime and carbon dioxide as a gaseous product is formed. Hence, when CaCO3 is heated it decomposes to give calcium oxide and carbon dioxide. So, the correct answer is Option B,C .

Explanation:

2)When silver chloride is exposed to light, it decomposes to form silver metal and chlorine gas. This reaction is used in black and white photography.

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