World GK Questions and answers pdf - 2

Question: 6

Define calorie?

Calorie is the measurement of heat energy. The amount of heat energy is required to raise the temperature of one gram of water through 1°C is called 1 calorie.

Question: 7

What are called volatile liquids?

Liquids which evaporate very quickly and at very low heat are called volatile liquids.

Question: 8

What are the three processes of transfer of heat?

Transfer of heat occurs through conduction, convection and radiation.

Question: 9

What is a thermostat?

A thermostat is used to maintain a steady temperature in the system.

Question: 10

What is decibel?

Decibel is the unit of measure sound. It is a logarithmic scale of sound intensity.