Physics MCQs for Class 9 with Answers
Water on cooling below 4 oC begins to:
Expand
Contract
Boils
None of these
The range of clinical thermometer is:
90 oC – 106oC
35oC – 42oC
100oC – 132oC
24oC – 35oC
A simple way to know how much a body is hot or cold is
Our sense of touch
Termometer
Thermostat
Setback state
Which of the following do not effect evaporation?
Temperature
Wind
Volume
Surface area of liquid
Thermostat is a controlling switch:
Heat
Temperature
Sound
Light
The temperature at which a solid start melting is:
Freezing point
Melting point
Fusion point
Both B and C
Water starts boiling at:
80 °C
100 °C
90 °C
101 °C
When a substance is changed from its solid state to liquid state by adding heat, the process is called
Melting
Fusion
Freezing
A and B both
Steam is used to run machine because of high amount of ___________ heat.
Latent
Great
Large
Nil
Which gas is replaced by Ammonia in refrigerators?
Nitrogen
Carbon di oxide
Methane
Freon gas
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