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

How does thunder take place?

Sometimes lighting may be seen before the thunder is heard. Why?

During lightning and thunder, we should avoid standing in-ground and open spaces Why?

______ instruments produce a specific sound when they are struck, scrapped, or clashed together.

The first-ever satellite ______ was launched in 1975.

Mars rotates about its own axis once in ______ hours______ minutes.

Match the following:

Name an Indian pilot who was selected as a cosmonaut in a joint space program between India and Soviet Russia.

Write the physical properties of nitrogen.

Write any two advantages of Dalton’s atomic theory.

Write any two limitations of Dalton’s atomic theory.

The pleasant taste of drinking water is due to the presence of a dissolved substance which includes air, CO_2, and minerals.

What is soft water?

Which water is hard?

Which water is soft?

Take samples of water from different sources (like a tube well, a lake, a pond, or a river) and pour equal quantities of each sample of water into different test tubes. Measure the height of water in each test tube with a scale. Add one or two drops of liquid soap to each test tube. Shake each test tube five times and observe the height of the lather in each sample. Record your observations in the table. Which water is soft? Which water is hard? Can you say why?

What are the characteristics of fuel?

______ is not a characteristic of cardiac muscle.

The hardest working muscle is found in the ______.

______ is a bundle of contractile tissue.