NSO Level 1- Science Olympiad (SOF) Class 8: Questions 1061 - 1064 of 1076

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Question number: 1061

» Friction

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Appeared in Year: 2012

MCQ▾

Question

Which of the following cannot be charged easily by friction?

Choices

Choice (4) Response

a.

A copper rod

b.

An inflated balloon

c.

A Woolen cloth

d.

A plastic scale

Question number: 1062

» Some Natural Phenomena

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MCQ▾

Question

Aluminium and iron are both metals. But aluminium is preferred as the leaves of an electroscope. The reason is

Choices

Choice (4) Response

a.

Iron is a poor conductor of electricity.

b.

Aluminium is lighter than iron.

c.

Aluminium is more conductive than iron.

d.

None of the above

Question number: 1063

» Metals and Non-Metals

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Appeared in Year: 2012

MCQ▾

Question

The given diagram shows the reactions of three metals with dilute hydrochloric acid. What are metals P, Q, R?

Image shows Reactions of metals with dilute hydrochloric acid

Image Shows Reactions of Metals with Dilute Hydrochloric Acid

Image shows Reactions of metals with dilute hydrochloric acid

Choices

Choice (4) Response

a.

P - Copper, Q - Magnesium, R - Zinc

b.

P - Copper, Q - Zinc, R - Magnesium

c.

P - Zinc, Q - Magnesium, R - Copper

d.

P - Magnesium, Q - Zinc, R - Copper

Question number: 1064

» Some Natural Phenomena

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MCQ▾

Question

When Nishit visited the Statue of Unity, his uncle who is an electrical Engineer told him that this statue will help the whole area from the striking of lightning. Select the fact that justifies this statement.

1. It is the tallest structure in the nearby area.

2. It is made up of copper, which is a good conductor of electricity.

3. The charges accumulated in the cloud above the statue easily gets discharged by earthing through the lightning conductor attached at the top.

Choices

Choice (4) Response

a.

1&2

b.

1&3

c.

2&3

d.

None of the above

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