NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1632 - 1639 of 2028

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Question 1632

Question

MCQ▾

Which of the following is non – contact force?

Choices

Choice (4)Response

a.

Elastic spring force

b.

Muscular force

c.

Friction force

d.

Electrostatic force

Question 1633

Question

Matching-Pair▾

Find matching pair:

Choices

Choice (4)Response

a.

Levelling

Loosens the soil

b.

Fallowing

Leaving land uncultivated

c.

Emasculation

Sowing of seeds

d.

Harvesting

Removal of weeds

Question 1634

Question

MCQ▾

Most common weedicide used in India is:

Choices

Choice (4)Response

a.

DDT

b.

NPK

c.

ATP

d.

2,4 D

Question 1635

Question

MCQ▾

Which of the following mirrors are used in periscopes?

Choices

Choice (4)Response

a.

Plane mirrors

b.

Plano – convex mirrors

c.

Convex mirrors

d.

Concave mirrors

Question 1636

Question

MCQ▾

Which of the following metal is not extracted by electrolysis?

Choices

Choice (4)Response

a.

Sodium

b.

Potassium

c.

Iron

d.

Aluminum

Question 1637

Question

MCQ▾

When two plane mirrors are placed perpendicular to each other, the number of multiple images formed by them is:

Choices

Choice (4)Response

a.

b.

3

c.

4

d.

0

Question 1638

Question

MCQ▾

The most preferring material as heating element in electrical immersion heater is:

Choices

Choice (4)Response

a.

Iron

b.

Nichrome

c.

Magnesium oxide

d.

Copper

Question 1639

Question

MCQ▾

In the shoes of football players, spikes are provided to:

Choices

Choice (4)Response

a.

hit football forcefully

b.

decoration

c.

to increase friction

d.

to decrease friction

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