Question # 1

___________ specific heat of water is benefits in sustaining life.

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High

Low

Medium

None

Bimetallic strip works on the principle of

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expansion of metals

contraction of metals

both (A) and (B)

unequal expansion of metals

From following in which device thermostat is used:

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Electroscope

Electric Bell

Electric Iron

Radio

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

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Low temperature

Low specific heat of water

Less absorption of heat

Large specific heat of water

Heat capacity of 5 kg water is.

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2000 JK^-1

2100 JK^-1

21000 JK^-1

210000 JK^-1

If the mass of a body is 'm' and change in its temperature isΔT, then the heat absorbed or released is given by

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ΔQ = cmΔT

ΔQ = mΔT

ΔQ = 2cΔT

ΔQ = cmΔT2

S.I unit of specific heat is:

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Jkg^-1 K^-1

J^-1kg^-1K^-1

JkgK

Jkg^-1K

A simple way to know how much a body is hot or cold is

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Our sense of touch

Termometer

Thermostat

Setback state

Which expands on heating?

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Water

Steel

Copper

All are true

Which process produced cooling effect?

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boiling

freezing

condensation

evaporation

The range of clinical thermometer is:

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90 ^oC - 106^oC

35^oC - 42^oC

100^oC - 132^oC

24^oC - 35^oC

On heating the strip, ___________ expands more than_______

respectively.

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Brass, Iron

Iron, Brass

Copper, brass

Brass, copper

Gallium (element) melts at:

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40 °C

30 °C

80 °C

90 °C

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