Which of the following statement is (are) true in case of changes of state?

Options

A. Every substance on absorbing heat, undergoes change in state from solid to liquid and liquid to gas at any temperature.
B. All substances do not undergo change in state from solid to liquid and liquid to gas on absorbing heat at any temperature.
C. During change of state there is no change in temperature.
D. Both (b) and (c)

Answer

D

Explanation

When a substance is undergoing change of state, the temperature remains constant. But all substances do not undergo changes in their states at any temperature on absorbing or losing heat.