SSLC (English Medium) Class 8 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

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.

Cardiac muscles are voluntary muscles.

Name the types of muscles.

In a Cryobank, the seeds are preserved in ______.

______ has led to the destruction of coral seeds.

______ Biosphere reserve is located in Tamil Nadu.

A National park is an example of ______ conservation.

World Wild life Day is celebrated on ______.

Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.