# Physics MCQs for Class 9 with Answers Chapter 7

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If ‘m’ is a mass of a body and ‘c’ is its specific heat, then its heat capacity is a given by
m/c
c/m
mc
mc2

Normal human body temperature is
15oC
37oC
37oF
98.6oC

Density of water in kgm-3 is:
1000
4200
4300
4500

The freezing point of Mercury is:
49 oC
-49oC
39oC
-39oC

The temperature of sun surface is:
5000°C
4000°C
6000°C
7000°C

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:
Hv = m/ΔQv
Hv = mΔQv
Hv = cmΔQv
Hv =ΔQv/m

Gallium (element) melts at:
40 °C
30 °C
80 °C
90 °C

In kelvin scale, lower reference point is:
273 K
373 K
180 K
100 K

Density of water is:
100 kgm-3
1000 kgm-3
10 kgm-3
1 kgm-3

Which of the follow material has large specific heat?
Copper
Ice
Water
Mercury

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