SSLC (English Medium) इयत्ता ८ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Convection is the process by which the thermal energy flows in solids.

Which one of the following statements about thermal conductivity is correct? Give reason.

______ is a device that protects building from lightning strike.

Consider the statement given below and choose the correct option.

Assertion: It is safer to stand under a tall tree during lightning.

Reason: It will make you the target for lightning.

How lightning takes place?

What kind of musical instrument is a sitar?

Chandrayaan-1 was launched from Sriharikota.

What are the objectives of Chandrayaan -1?

What are the achievements of Chandrayaan - 1?

Soap lathers well in hard water.

Match the following.

Give a reason for the following.

Hard water is not good for washing utensils.

What are the causes of temporary hardness and permanent hardness of water?

An example for fossil fuel is _______.

Identify the gas known as syngas. Why is it called so?

Explain the different types of fuel gases.

Osmosis is the movement of water molecules from ______.

The erythrocyte is placed in _______ solution which has lesser concentration of solutes and greater concentration of water than in the cytoplasm.

_______ is a good example for anaerobic respiration.

Match the following.