Question # 1

What flower is known as natural thermometer?

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Rose

Barasicca

Crocus

Tulip

Length of a rod is L∘ on temperature T∘. After heating upto temperature T, its length L becomes

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L = L∘ (1 + αΔT)

L = L∘ (1 + ΔT)

L = L∘ (1 - αΔT)

L = L∘ (1 -ΔT)

The value of latent heat of vaporization of water is:

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2.26 x 10⁶ Jkg^-1

2.29 x 10⁵Jkg^-1

2.26 x 10^-6Jkg^-1

3.29 x 10^-5Jkg^-1

The device that is used to measure the temperature of a body called

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Thermometer

Acidimeter

Barometer

Clock timer

Which gas is replaced by Ammonia in refrigerators?

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Nitrogen

Carbon di oxide

Methane

Freon gas

"Latent" is derived from ............... word.

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Latin

English

Greek

Roman

Water freezes at .

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0^o F

32 ^oF

-273 K

0 K

In how many division Fahrenheit scale is divided?

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100

273

180

50

When a substance is changed from its solid state to liquid state by adding heat, the process is called

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Melting

Fusion

Freezing

A and B both

Latent heat of vaporization is denoted by:

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H1

Hm

Hv

Hf

Which of the follow material has large specific heat?

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Copper

Ice

Water

Mercury

The temperature at which a solid start melting is:

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Freezing point

Melting point

Fusion point

Both B and C

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