Physics MCQs for Class 9 with Answers
Latent heat of vaporization is denoted by:
H1
Hm
Hv
Hf
The Celsius lower reference point is 0oC while upper reference point is:
212 oC
180oC
100oC
110oC
Expansion in one meter steel is:
1.0 mm
0.1 mm
1.0 mm
1.3 mm
Water freezes at .
0o F
32 oF
-273 K
0 K
Water freezes at
0oF
32oF
273 K
0 K
Evaporation takes place at temperature :
100°C only
0°C only
35°C Only
At all temperature
There are types of thermometer:
1
2
3
4
In ___________ (CFC) was found reacting with ozone.
1920s
1970s
1950s
1960s
Evaporation causes:
Melting
Boiling
Freezing
Cooling
If the mass of a body is ‘m’ and change in its temperature isΔT, then the heat absorbed or released is given by
ΔQ = cmΔT
ΔQ = mΔT
ΔQ = 2cΔT
ΔQ = cmΔT2
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