NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1991 - 1997 of 2029
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Question number: 1991
» Chemistry » Separation of Substances
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
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
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
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
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
Question
Is the Following Statement True or False?
Sharpening of a pencil is a chemical change?
Question number: 1997
» Chemistry » Separation of Substances
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 | |