Which of the following statements is INCORRECT for heat ?

When two bodies are mixed, total heat is equal to the sum of the heat contents of the two bodies.

It is measured by the principle of calorimetry.

The temperature of the two bodies are same even if their heat contents are different.

Heat content of body depends on its mas, temperature and nature.

Solution

Correct option is A

Option A (Incorrect):
Heat is not conserved like energy. When two bodies are mixed, heat exchange occurs due to temperature difference until thermal equilibrium is reached. The total heat content is not simply additive because some heat is lost or gained depending on the system and surroundings.