Question # 1

Degree of hotness or coldness measures the body:

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Heat

Temperature

Energy

Thermal

S.I unit of specific heat is:

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Jkg^-1 K^-1

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

JkgK

Jkg^-1K

If a liquid of mass 'm' requires thermal energy 'ΔQv' to completely change into gas at its boiling point without any change in its temperature, then its latent heat of vapourization can be calculated as following:

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Hv = m/ΔQv

Hv = mΔQv

Hv = cmΔQv

Hv =ΔQv/m

The freezing point of Mercury is:

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49 ^oC

-49^oC

39^oC

-39^oC

Evaporation takes place from liquid :

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Everywhere

Above surface only

Below surface only

Middle of liquid

The energy store in an atom or molecule due to intermolecular force is:

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Kinetic energy

Potential energy

Internal energy

G.P.E

Coefficient of linear thermal expansion of Steel?

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1.2 x 10^-5

2.2 x 10^-5

0.2 x 10^-5

1.3 x 10^-5

Water freezes at:

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0° F

32°F

-273 K

0 K

In kelvin scale, lower reference point is:

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273 K

373 K

180 K

100 K

In ___________ (CFC) was found reacting with ozone.

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1920s

1970s

1950s

1960s

In how many division Fahrenheit scale is divided?

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100

273

180

50

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

Degree of hotness or coldness a body is called:

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Heat

Internal Energy

Temperature

Potential energy

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9th Class Physics Chapter 8 Thermal Properties of Matter English Medium KPK Boards Online Mcqs MCQs With Answers

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