NSO Level 1- Science Olympiad (SOF) Class 8: Questions 1065 - 1068 of 1076

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Question number: 1065

» Chemical Effects of Electric Current

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MCQ▾

Question

The chemical reaction taking place during the passage of electricity through electrolytes is called

Choices

Choice (4) Response

a.

Electroplating

b.

Electrolysis

c.

Electromagnetism

d.

All of the above

Question number: 1066

» Chemical Effects of Electric Current

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MCQ▾

Question

Sana was doing an experiment to find out fluid conductors and insulators. The arrangement is as follows

Image shows Fluid Conductors and Insulators

Image Shows Fluid Conductors and Insulators

Image shows Fluid Conductors and Insulators

She was provided with salt water, distilled water, dilute hydrochloric acid and quick lime water for testing conductivity. Her observation would be

Choices

Choice (4) Response

a.

All of them are good conductors of electricity

b.

Salt water, distilled water and dilute hydrochloric acid are good conductors while quick lime is a poor conductor

c.

All of them are poor conductors of electricity

d.

Salt water, quick lime and dilute hydrochloric acid are good conductors while distilled water is a poor conductor

Question number: 1067

» Chemical Effects of Electric Current

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MCQ▾

Question

Materials which do not allow electricity to pass through them are called

Choices

Choice (4) Response

a.

Semi-conductors

b.

Insulators

c.

Good conductors

d.

Question does not provide sufficient data or is vague

Question number: 1068

» Some Natural Phenomena

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MCQ▾

Question

Reema stays in a highly seismic area in Japan. She wishes to build a house. Select suitable set of material from the given list to construct an earthquake proof structure.

1. Basement – rouble, wall - hollow bricks, roof – aluminium sheet, doors & windows - plastic

2. Basement - rouble, wall – cement bricks, roof – aluminium sheet, doors & windows – plywood

3. Basement-cement bricks, wall - hollow bricks, roof – aluminium sheet, doors & windows – glass

4. Basement-cement bricks, wall - plywood, roof – concrete, doors & windows – glass

Choices

Choice (4) Response

a.

1

b.

3

c.

4

d.

2

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