# NSO Level 1- Science Olympiad (SOF) Class 8: Questions 817 - 821 of 1175

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## Question 817

### Question

MCQ▾

Weight of an object is the product of its mass and gravity. The gravitational force of earth has a fixed value. It is same for all objects irrespective of their size or shape. Weight of objects change with size and hardness. The explanation to this statement is

### Choices

Choice (4)Response

a.

Weight of an object is the force with which earth attracts it towards its centre

b.

Mass changes with size and hardness

c.

None of the above

d.

Question does not provide sufficient data or is vague

## Question 818

### Question

MCQ▾

Pick out the examples where force applied is used to pull the object.

### Choices

Choice (4)Response

a.

Moving a heavy stone

b.

Opening a door from outside

c.

Kicking a foot ball

d.

Moving a horse cart

## Question 819

### Question

MCQ▾

Which of the statement is true about pressure?

### Choices

Choice (4)Response

a.

It is directly proportional to the area of application of force

b.

It is directly proportional to the force applied

c.

None of the above

d.

All of the above

### Passage

Suhana took a tin and filled water in it. She drilled holes A, B and C on it as shown in the figure.

## Question 820 (1 of 2 Based on Passage)

### Question

MCQ▾

In Fig X, the pressure of the out flowing water would be minimum in hole

### Choices

Choice (4)Response

a.

B

b.

A

c.

C

d.

All of the above

## Question 821 (2 of 2 Based on Passage)

### Question

MCQ▾

The pressure of the out flowing water would be maximum in hole

### Choices

Choice (4)Response

a.

A

b.

B

c.

C

d.

None of the above

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