Science MCQ

A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.

In which mode of transfer of heat, molecules pass on heat energy to neighbouring molecules without actually moving from their positions?

SI unit of temperature is ______.

Two cylindrical rods of same length have the area of cross section in the ratio 2:1. If both the rods are made up of same material, which of them conduct heat faster?

Calorie is the unit of ______.

Two cylinders of equal height and radius are made of copper and aluminum. Which of them conducts heat faster?

The specific heat capacity of water is

Copper and Iron are good conductors of heat. Which one of the following is not a good conductor of heat?

A liquid changes into a gas at a constant temperature known as its………………………

The phenomenon involved in the sea breeze and the land breeze is ………………………

Warm air is ………………………

On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?

In which of the following, chemical energy is converted into heat energy?

When we heat one end of an iron rod, its other end also gets heated. Can you say, Which one of the following is behind this?

Which one of the following scales has a lower fixed point at 0°C?

Ice does not melt rapidly because of

Which of the following is true?

Sweating causes cooling because water has a………………………

The temperature at which a liquid gets converted into its vapour state is called its………………………

The amount of heat required to raise the temperature through 1°C is called………………………

Water is used as a coolant because it ………………….