NSO Level 1- Science Olympiad (SOF) Class 8: Questions 932 - 937 of 1076

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Question number: 932

» Chemical Effects of Electric Current

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

When the water falls down as rain drops, many impurities dissolve in it.

Reason (Ꭱ)

The presence of chemicals and impurities makes rain water a good conductor of electricity

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 933

» Some Natural Phenomena

Edit
MCQ▾

Question

Lightning occurs due to the accumulation of electric charges in the

Choices

Choice (4) Response

a.

Sky

b.

Space

c.

Atmosphere

d.

Clouds

Question number: 934

» Some Natural Phenomena

Edit
MCQ▾

Question

The material which can be selected as the leaves of an electroscope is

Choices

Choice (4) Response

a.

Plastic

b.

Aluminium

c.

Iron

d.

Rubber

Question number: 935

» Chemical Effects of Electric Current

Edit
MCQ▾

Question

Which of the following is not an application of electroplating?

1. Metals to prevent rusting

2. Galvanisation

3. In the field of cutlery and artificial jewellery.

Choices

Choice (4) Response

a.

3

b.

2

c.

1

d.

None of the above

Question number: 936

» Chemical Effects of Electric Current

Edit
MCQ▾

Question

The right arrow in the figure shows the direction of

Choices

Choice (4) Response

a.

Flow of electrons

b.

Flow of protons

c.

Electric current

d.

None of the above

Question number: 937

» Some Natural Phenomena

Edit
MCQ▾

Question

Roy is swimming in the pool and a thunder storm occurred. What should he do to save himself?

Choices

Choice (4) Response

a.

He should stop swimming and stand in the pool.

b.

He should stop swimming and take shelter at a safer place.

c.

He should continue swimming

d.

All of the above

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