State whether the given statement is true or false:

Combination is the reverse of decomposition reaction.

True

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False

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Solution

The correct option is A True
In Decomposition reaction a single substance decomposes to form two or more substances which is exact opposite of Combination reaction in which two or more reactants combine to form a single product that is why combination reactions called the opposite of decomposition reactions. For examples:

Combination: $C a O + C O_{2} \to C a C O_{3} + E n e r g y$

Decomposition: $C a C O_{3} \to C a O + C O_{2}$

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