Physics MCQs for Class 9 with Answers Chapter 7

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Physics MCQs for Class 9 with Answers


Kinetic energy of the molecules depends on its:
Temperature
Surface are
Density
Volume

Bimetallic strip works on the principle of
expansion of metals
contraction of metals
both (A) and (B)
unequal expansion of metals

An instrument is used for measuring temperature is called:
Barometer
Thermometer
Voltmeter
None of above

Water freezes at:
0° F
32°F
-273 K
0 K

Boiling point of water is:
0 oC
100oC
212oC
180oC

Process by which liquids changes into vapors is …………… .
Vaporization
Evaporation
Boiling
None of above

A material of thermometer should has:
Visible
High freezing point
Low melting point
All of these

When ice is cooled below 0 oC it:
Expand
Contracts
Boils
None of these

Which of the following affects evaporation?
Temperature
Surface area of the liquid
Wind
All of the above

Ice at ………… °C is more effective in cooling.
0
-1
-2
-3

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