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Question

Thermal decomposition of a substance is brought about with the help of

A
reactants
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B
water
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C
wind
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D
heat
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Solution

The correct option is D heat
Thermaldecomposition, or thermolysis, is a chemical decomposition caused by heat. The decomposition temperature of a substance is the temperature at which the substance chemically decomposes. The reaction is usually endothermic as heat is required to break chemical bonds in the compound undergoing decomposition.
Hence option (D) is correct.

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