Question

Complete the following: The lid of a calorimeter minimises heat loss by __________.

• A. convection
• B. radiation

Hint:

In a calorimeter: The vacuum flask design minimizes conduction and convection. The silvered surfaces minimize radiation. The lid primarily stops convection.

Answer 1

The Correct Option is A

A calorimeter is designed to minimize heat exchange with the surroundings. The primary modes of heat loss are conduction, convection, and radiation. The lid covers the top opening of the calorimeter. This traps the air (or vapor) above the hot liquid, preventing it from rising and being replaced by cooler air from the surroundings. This process of heat transfer through fluid movement is called convection. Therefore, the lid's main function is to minimize heat loss by convection.