NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1986 - 1992 of 2029

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Question number: 1986

» Physics » Work and Machines

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Question

In case of seesaw mechanical advantage is:

Choices

Choice (4)Response

a.

No MA

b.

c.

d.

Question number: 1987

» Chemistry » Separation of Substances

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MCQ▾

Question

Earth is a magnet. Its south pole is situated near geographic ________ pole.

Choices

Choice (4)Response

a.

North

b.

East

c.

South

d.

West

Question number: 1988

» Chemistry » Separation of Substances

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MCQ▾

Question

Which of the following statements is incorrect regarding the magnetic field formed by a bar magnet.

Choices

Choice (4)Response

a.

Magnetic field lines gets crowded at the centre of magnet

b.

The magnetic field lines originates from the north pole and ends at the south pole of the magnet

c.

Magnetic field lines are closed and continuous curves

d.

Magnetic field lines do not intersect each other

Question number: 1989

» Chemistry » Changes Around Us

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Question

Forming of curd from milk is change.

Choices

Choice (4)Response

a.

Slow change

b.

Chemical change

c.

Desirable change

d.

All a. , b. and c. are correct

Question number: 1990

» Physics » Work and Machines

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Question

If a pulley is not frictionless, then

Choices

Choice (4)Response

a.

No variation

b.

c.

d.

Question number: 1991

» Chemistry » Separation of Substances

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MCQ▾

Question

The substances which are feebly attracted by magnets are known as

Choices

Choice (4)Response

a.

Diamagnetic substances

b.

Ferromagnetic substances

c.

Paramagnetic substances

d.

Question does not provide sufficient data or is vague

Question number: 1992

» Physics » Work and Machines

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MCQ▾

Question

Due to which of the following reason efficiency of a simple machine is less than 100%?

Choices

Choice (4)Response

a.

Energy dissipation by sound

b.

Presence of Friction

c.

Load > Effort

d.

None of the above

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