NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1992 - 1999 of 2029

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Question 1992

Question

MCQ▾

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 1993

Question

MCQ▾

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 1994

Question

MCQ▾

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 1995

Question

MCQ▾

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 1996

Edit

Statement

True-False▾

Sharpening of a pencil is a chemical change?

Question 1997

Question

MCQ▾

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

Question 1998

Question

MCQ▾

Slow change always occur after

Choices

Choice (4)Response

a.

2 min

b.

1 min

c.

None of the above

d.

All of the above

Question 1999

Question

MCQ▾
Image Showing Electromagnet

The above figure shows an electromagnet.

What will be the polarity of A?

Choices

Choice (4)Response

a.

North Pole

b.

South Pole

c.

All of the above

d.

Question does not provide sufficient data or is vague

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