# NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1617 - 1623 of 2028

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## Question 1617

### Question

MCQ▾

Blood is consisting of:

### Choices

Choice (4)Response

a.

Platelets

b.

RBC (red blood cells)

c.

Plasma

d.

All a., b. and c. are correct

## Question 1618

### Question

MCQ▾

The speed of sound in a medium varies with:

### Choices

Choice (4)Response

a.

Temperature

b.

Humidity

c.

Density

d.

All a., b. and c. are correct

## Question 1619

### Question

MCQ▾

The velocity of the sound on moon is:

### Choices

Choice (4)Response

a.

0

b.

c.

d.

## Question 1620

### Question

MCQ▾

A cylindrical container filled with water as shown in figure. are closed holes of equal diameter at different height of the container. If we open these holes, through which hole, water covers a maximum horizontal distance?

### Choices

Choice (4)Response

a.

S

b.

P

c.

R

d.

Q

## Question 1621

### Question

MCQ▾

The atmospheric pressure is measured by:

### Choices

Choice (4)Response

a.

Thermometer

b.

Anemometer

c.

Barometer

d.

All of the above

## Question 1622

### Question

MCQ▾

Friction force is decreased by:

### Choices

Choice (4)Response

a.

Using oil on the surface of contact

b.

Making surface smooth

c.

Decrease the weight of body

d.

All a., b. and c. are correct

## Question 1623

### Question

MCQ▾

If the height of the water surface above the bottom of given vessels is same, then in which of the following vessel, the pressure of the water on the bottom of vessel is greatest?

### Choices

Choice (4)Response

a.

Vessel – 2

b.

Same pressure at bottom for all vessels.

c.

Vessel – 3

d.

Vessel – 4

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