SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Give reasons why –

chimneys are located high up in kitchens and factories

Give reasons why –

we wear woolen clothes in winter

Water is used as a coolant because it ______.

The amount of heat required to raise the temperature to 1°C is called ______.

While a substance is undergoing a change of state, the temperature of the body remains ______.

______ is the degree of hotness or coldness of a body.

What is the other name for heat capacity?

Which factor determines the direction of flow of heat from one body to another?

What is the minimum possible temperature? Is there also a maximum possible temperature?

What do you mean by thermal equilibrium?

Why are burns caused by steam more painful than those caused by boiling water at the same temperature?

Define absolute zero.

Compare heat capacity and specific heat capacity.

Explain the following effects of heat.

Change in temperature

What will be the final temperature if 1,68,000 J of heat is absorbed by 2 kg of water at 30°C?

When temperature increases the speed of sound ______.

The speed of sound in a gaseous medium depends on ______.

The propagating disturbance that travels in a medium is called a ______.

Sound travels faster in ______ and slower in ______.

The velocity of sound by a tuning fork frequency of 480 Hz is 340 ms Its wavelength is ______.