NSO Level 1- Science Olympiad (SOF) Class 8: Questions 1046 - 1049 of 1076

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Question number: 1046

» Some Natural Phenomena

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MCQ▾

Question

Three pin plugs are safer than two pin plugs in electric appliances

The reason is

Choices

Choice (4) Response

a.

This helps to protect the electrical appliance from short circuit and Damage

b.

The third pin represents neutral point and is meant for ear thing.

c.

Three pin plugs have positive, negative and neutral points.

d.

All a. , b. and c. are correct

Question number: 1047

» Chemical Effects of Electric Current

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MCQ▾

Question

Electricians always use rubber slippers while doing their work. The reason is

Choices

Choice (4) Response

a.

Rubber is a good insulator.

b.

Rubber is neither a conductor nor an insulator.

c.

Rubber slippers provide grip while working.

d.

Rubber is a good conductor of electricity.

Question number: 1048

» Chemical Effects of Electric Current

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MCQ▾

Question

Payal wanted to test the presence of electric current in a circuit using an LED. She is confused about the anode and cathode of the diode. The correct hint to identify the terminals is

Choices

Choice (4) Response

a.

Any lead can be connected to cathode

b.

The longer lead represents cathode

c.

The longer lead represents anode

d.

Question does not provide sufficient data or is vague

Question number: 1049

» Chemical Effects of Electric Current

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MCQ▾

Question

Sheena wants to do some experiments in electricity topic. Which tool kit will help her to test the presence of electric current in an electric circuit?

Image shows Tools Kit A

Image Shows Tools Kit A

Image shows Tools Kit A

Image shows Tools Kit B

Image Shows Tools Kit B

Image shows Tools Kit B

Choices

Choice (4) Response

a.

Kit A

b.

Kit A and Kit B

c.

Kit B

d.

All of the above

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