NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1709 - 1715 of 2028

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Question 1709

Question

MCQ▾

Rainbow occurs due to, which of the following phenomenon?

Choices

Choice (4)Response

a.

Internal Reflection

b.

Refraction

c.

Dispersion

d.

All a., b. and c. are correct

Question 1710

Question

MCQ▾

Which of following surface cannot form a clear image?

Choices

Choice (4)Response

a.

Curved

b.

Ideal

c.

Rough

d.

Smooth

Question 1711

Question

MCQ▾

Imitation jewelry is made by:

Choices

Choice (4)Response

a.

Applying a layer of chromium

b.

Applying a layer of silver

c.

Applying a layer of gold

d.

Both b. and c. are correct

Question 1712

Question

MCQ▾

Electrostatic force acts;

Choices

Choice (4)Response

a.

between earth and body

b.

on contact surface of two bodies

c.

between charge particles

d.

between iron and magnet

Question 1713

Question

MCQ▾

Minerals required by a plant in small quantity are called:

Choices

Choice (4)Response

a.

Micronutrients

b.

Macronutrients

c.

Fertilizers

d.

Manures

Question 1714

Question

MCQ▾

A student waiting to receive his results feels nervous and the rate of his heartbeat increases. There is an increase in the release of the hormone:

Choices

Choice (4)Response

a.

Insulin

b.

Oestrogen

c.

Thyroxine

d.

Adrenaline

Question 1715

Question

MCQ▾

Which of the following phenomenon occurs in transformation of water vapor to liquid in form of drops?

Choices

Choice (4)Response

a.

Heat is released

b.

Initially heat released and then absorbed

c.

Heat is absorbed

d.

Initially heat absorbed and then released

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