When a decomposition reaction is carried out by heating, it is called-

Correct option is A

The correct answer is (a) Thermal decomposition.
· Thermal decomposition is a type of decomposition reaction where a compound breaks down into simpler substances upon heating. This type of reaction typically requires heat energy to break chemical bonds.
Information Booster:
· Non-electrolytic decomposition reaction: Not a standard term in chemistry.
· Photo decomposition reaction: A decomposition reaction caused by light (photons), such as the decomposition of silver chloride in sunlight.
· Electrolytic decomposition reaction: A decomposition reaction that occurs due to the passage of electric current, such as the electrolysis of water.