NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1613 - 1618 of 2028

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Question number: 1613

» Physics » Force and Pressure

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MCQ▾

Question

School bags are provided with wide straps to carry them to reduce:

Choices

Choice (4) Response

a.

Pressure on shoulders

b.

Gravitational force

c.

Thrust

d.

None of the above

Question number: 1614

» Biology » Reaching the Age of Adolescence

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Question

The hormones secreted by the pineal gland are:

I. Melatonin

II. Hormones which help control circadian rhythm

III. Hormone which helps to set biological clock

Which statement (s) is/are correct?

Choices

Choice (4) Response

a.

II only

b.

I and II only

c.

I, II and III only

d.

I and III only

Question number: 1615

» Physics » Force and Pressure

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Question

In figure a cuboid of mass is placed on a surface in three different position.

A cuboid placed in three different positions

A Cuboid Placed in Three Different Positions

In figure a cuboid is placed in three different position is shown.

In which position, pressure exerted by the cuboid on the surface is maximum?

Choices

Choice (4) Response

a.

Position (2)

b.

Position (3)

c.

In all cases pressure remains same.

d.

Position (1)

Question number: 1616

» Physics » Force and Pressure

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MCQ▾

Question

If a body moves in a straight line with constant speed, which of the following force is acted on it?

Choices

Choice (4) Response

a.

Magnetic force

b.

Gravitational force

c.

No force acts on body

d.

Friction force

Question number: 1617

» Biology » Reaching the Age of Adolescence

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MCQ▾

Question

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 number: 1618

» Physics » Sound

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MCQ▾

Question

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

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