NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1990 - 1997 of 2029

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Question number: 1990

» Physics » Work and Machines

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MCQ▾

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

Question number: 1993

» Chemistry » Separation of Substances

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MCQ▾

Question

The magnetic power of magnet is maximum at

Choices

Choice (4) Response

a.

Poles

b.

Every part of magnet

c.

Center

d.

Not yet defined

Question number: 1994

» Chemistry » Separation of Substances

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MCQ▾

Question

Which magnet is more effective in producing magnetic field?

Choices

Choice (4) Response

a.

Iron magnets

b.

Nickel magnets

c.

Cobalt magnets

d.

Copper magnet

Question number: 1995

» Chemistry » Changes Around Us

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MCQ▾

Question

From the following physical changes, choose the irreversible process.

Choices

Choice (4) Response

a.

Dicing of onion

b.

Melting of ice

c.

Coloring of car

d.

Crumpling a paper

Question number: 1996

» Chemistry » Changes Around Us

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True-False▾

Question

Is the Following Statement True or False?

Sharpening of a pencil is a chemical change?

Question number: 1997

» Chemistry » Separation of Substances

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MCQ▾

Question

Magnetic substances are attracted to

Choices

Choice (4) Response

a.

Centre of magnet

b.

North pole of magnet

c.

South pole of magnet

d.

All a. , b. and c. are correct

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