On what basis is the difference between thermal decomposition and electrolytic decomposition most clearly identified?
Answer and explanation
Correct answer: By the source of energy
Decomposition is the breaking of one compound into simpler substances, but the two named types differ in how the reaction receives energy. Thermal decomposition is driven by heating, as in the breakdown of calcium carbonate on strong heating. Electrolytic decomposition is driven by an electric current, as in water electrolysis. Product colour, vessel shape, and reactant mass do not define the classification, so A is correct.
Frequently asked questions
What is the correct answer to this question?
By the source of energy
Why is this the correct answer?
Decomposition is the breaking of one compound into simpler substances, but the two named types differ in how the reaction receives energy. Thermal decomposition is driven by heating, as in the breakdown of calcium carbonate on strong heating. Electrolytic decomposition is driven by an electric current, as in water electrolysis. Product colour, vessel shape, and reactant mass do not define the classification, so A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
