Can the process of rusting be called combustion? Explain.

Important Questions on Sample Question Paper

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 19

What do you mean by species? Explain some of its features.

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 20

The term metamorphosis is not used while describing humans development. Why?

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 21

What is the difference between contact and non-contact forces? Explain with the help of one example of each.

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 22

What do you understand by a kaleidoscope? State the principle on which it is based.

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 23

Clear and transparent water is always fit for drinking. Comment.

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 24

What are the causes of indoor air pollution? How can we minimise it?

MEDIUM

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 25

Rehan was travelling in a car during a thunderstorm accompanied by lightning. He saw a child standing under a tree in an open ground. He and his younger sister wanted to help the child but according to his sister, the standing child under a tree is a safe place but according to Rehan sitting in a car is better than standing under a tree. Rehan went to that child and told him to sit with them in a car.
Read the above passage and answer the following questions.
(a) Why it is safe to be inside a car than standing under a tree?
(b) On what phenomenon it is based?
(c) What values are exhibited by Rehan through his cut?

HARD

8th CBSE

IMPORTANT

All in One - SCIENCE CBSE Class 8>Chapter 19 - Sample Question Paper>Sample Question Paper>Q 26

How do sex hormones work? Explain with the help of a flow chart.