Question # 1

From following in which device thermostat is used:

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Electroscope

Electric Bell

Electric Iron

Radio

The changing of a liquid into vapours from the surface of the liquid without heating:

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Cooling

Vaporization

Evaporation

Sublimation

The unit of co-efficient of linear expansion :

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K

K^-1

Jkg^-1 K^-1

None of these

The Celsius lower reference point is 0^oC while upper reference point is:

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212 ^oC

180^oC

100^oC

110^oC

Dogs sweat through:

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Tongue

Legs

Skin

Glands

Crocus flower open when the temperature is:

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23 ^oC

26^oC

29^oC

32^oC

In Fahrenheit scale, upper refrence point is:

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32 ^oF

212 ^oF

180 ^oF

100 ^oF

Density of water in kgm^-3 is:

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1000

4200

4300

4500

On Celsius scale, temperature 300 K will be:

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26°C

25°C

24°C

27°C

A large water reservoir keeps the temperature of nearby land moderate due to

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Low temperature of water

Low specific heat of water

Less absorption of heat

Large specific heat of water

The changing of a liquid into vapours from the surface of the liquid

without heating:

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Cooling

Vaporization

Evaporation

Sublimation

Latent heat of vaporization is denoted by:

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H1

Hm

Hv

Hf

The value of latent heat of fusion ice is:

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3.36 x 10^-5 Jkg^-1

3.36 x 10⁵Jkg^-1

3.36 x 10⁶Jkg^-1

None of these

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