Question

On cooling down a substance, there is a loss of heat and the kinetic energy of its molecules ____________.

• A. increases
• B. decreases
• C. remains the same.
• D. None of these

Answer 1

The correct option is B

decreases

1. On cooling down a substance, the temperature decreases.
2. As a result, the heat energy decreases, and the average kinetic energy of molecules decreases.

Hence, the correct option is B (decreases).