Question

write the name of a product formed during thermal decomposition which is used by plants for preparing their food​

Answer 1

The answer is
Pyrolysis

Answer 2

A product formed during thermal decomposition which is used by plants for preparing their food​ is carbon-dioxide.

• Thermal decomposition of calcium carbonate( CaCO3) leads to the production of calcium oxide( CaO) and carbon-dioxide( CO2)  

CaCO3 ----> CaO + CO2

• Carbon dioxide is taken by the plants for the process of photosynthesis. It uses carbon dioxide and water as reactants to form glucose and oxygen. The reaction is given below:

6CO2 + 6H2O ------> C6H12O6 + 6O2

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• Thermal decomposition is the process of breakdown of a compound into its components in the presence of heat.