NSO Level 1- Science Olympiad (SOF) Class 8: Questions 954 - 957 of 1076

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Question number: 954

» Some Natural Phenomena

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MCQ▾

Question

Reshma was trying to make an electroscope. She collected different things needed for the purpose. Instead of aluminium strip, she used plastic strips as leaves. The effect of electric charges on it would be

Choices

Choice (4) Response

a.

The strips diverge in presence of both the charges.

b.

The strips do not diverge in presence of both the charges.

c.

The strips diverge in presence of negative charge only.

d.

The strips diverge in presence of positive charge only.

Question number: 955

» Some Natural Phenomena

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MCQ▾

Question

An instrument which measures and records the force and duration of an earthquake is called

Choices

Choice (4) Response

a.

Seismograph

b.

Electro-encephalograph

c.

Electro cardiograph

d.

All of the above

Question number: 956

» Chemical Effects of Electric Current

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MCQ▾

Question

Materials which allow electricity to pass through them easily are called

Choices

Choice (4) Response

a.

Insulators

b.

Good conductors

c.

Poor conductors

d.

All of the above

Question number: 957

» Chemical Effects of Electric Current

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Appeared in Year: 2012

MCQ▾

Question

Sudha took a small amount of sulphur in deflagrating spoon and heated it over a burner. As soon as it started burning, she put it in gas jar and covered with a lid. After sulphur stopped burning, she added a small amount of water in it and dissolved the gas in water by shaking it. She then tested the solution with red and blue litmus paper. What did she observe?

Image shows Tasting of Litmus Paper

Image Shows Tasting of Litmus Paper

Image shows Tasting of Litmus Paper

Choices

Choice (4) Response

a.

There was no change in the colour of litmus paper.

b.

Blue litmus paper turned red and red litmus paper turned blue.

c.

In the solution the red litmus paper turned blue.

d.

In the solution the blue litmus paper turned red.

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