Question # 1

According to Archimedes, upthrust is equal to

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Weight of displaced liquid

Volume of displaced liquid

Mass of displaced liquid

None of these

Which one box is used to keep food hot and ice cream cold for long period?

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Iron box

Aluminium Box

Styrofoam box

Plastic box

The number of base units in SI are.

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3

6

7

9

If a body is at a depth of 'h'form the liquid surface of density 'p' , then

the liquid pressure p[' in that body is:

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P = mgh

P = pgh

P = 2mgh

P = mag

The unit of electric charge is

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Ampare

Joule

Coulomb

Volt

In ___________ (CFC) was found reacting with ozone.

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1920s

1970s

1950s

1960s

Which gas is replaced by Ammonia in refrigerators?

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Nitrogen

Carbon di oxide

Methane

Freon gas

Barometer was first set up by:

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Robert

Torricelli

Al Razi

Nil

An ideal system gives output:

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50%

60%

80%

100%

Which law of motion is called law of inertia:

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first law of motion

Second law of motion

Third law of motion

Law of conversation of momentum

Which process produced cooling effect?

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boiling

freezing

condensation

evaporation

Heat capacity of 5 kg water is.

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2000 JK^-1

2100 JK^-1

21000 JK^-1

210000 JK^-1

Rate of change of velocity is known as.

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Acceleration

Speed

Velocity

Distance

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