NSO Level 1- Science Olympiad (SOF) Class 8: Questions 931 - 935 of 1175

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Question 931

Question

MCQ▾

In the above experiment, when he brought the refill near a balloon and observed that they came close to each other. From this experiment he concluded that

Choices

Choice (4)Response

a.

Like charges attract

b.

Unlike charges repel

c.

Unlike charges attract

d.

Like charges repel

Question 932

Question

Assertion-Reason▾

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 933

Question

MCQ▾

Lightning occurs due to the accumulation of electric charges in the

Choices

Choice (4)Response

a.

Sky

b.

Space

c.

Atmosphere

d.

Clouds

Question 934

Question

MCQ▾

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 935

Question

MCQ▾

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

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