A spoon made of steel is sank into water when it is dropped in it. But a saucepan which is much heavier than the spoon floats-why?

Important Questions on Sample Questions

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 7

Often, the cracked portion of glass is found glittering from a different angle when light falls on the said portion-why?

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 7

'Free surface of a liquid, at rest, remains always horizontal' — give an example of practical application of the said property of liquid in our daily life.

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 7

Watch a given picture and write what you understand by it.

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MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 7

Give examples of two easy experiments, results of which can show molecules of liquid and gas are dynamic in nature.

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 7

You are given zinc dust and powdered ferrous sulphide in two test tubes separately. How can you identify them by same chemical test? Write your observations.

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 7

Rusting of iron is a phenomenon of unwanted oxidation - reduction process. How rusting of iron can be prevented?

MEDIUM

8th West Bengal Board

IMPORTANT

Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 7

"The reaction