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

What is earthing?

What is electroscope? Explain how it works.

What is ductility?

Why are bells made of metals?

Can you store pickle in an aluminium utensil? Give reason.

Give reasons for the following.

1. Aluminum foils are used to wrap food items.
2. Immersion rods for heating liquids are made up of metallic substances.
3. Sodium and potassium are stored in kerosene.
4. Mercury is used in thermometers.

Which of the following is known as azote?

How can we prove that the electrons carry a negative charge?

In basic solution turmeric indicator paper changes from yellow to _______.

Turmeric is used as a _______.

In acidic solution, the colour of the hibiscus indicator paper will change to _____.

Hibiscus flower is an example for natural indicator.

How will you prepare natural indicator from turmeric powder?

_______ are the infectious protein particles.

Who discovered penicillin?

Which diseases can be prevented by vaccination?

What are antibiotics?

Maintenance of constant internal environment of the body is known as _________.

The process of air passing in and out the lungs is called ________.

Human beings are warm-blooded in nature.