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Online Tests
Physics 9th Class English Medium Unit 8 Online Test MCQs With Answers
Question # 1
The unit of co-efficient of linear expansion :
Choose an answer
K
K
-1
Jkg
-1
K
-1
None of these
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Question # 2
Alcohol has specific heat in Jkg
-1
K
-1
is:
Choose an answer
2500
4200
1000
138.6
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Question # 3
The temperature at which a solid start melting is:
Choose an answer
Freezing point
Melting point
Fusion point
Both B and C
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Question # 4
Absolute zero is equal to
Choose an answer
0 K
273
-273 K
373 K
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Question # 5
The Celsius lower reference point is 0
o
C while upper reference point is:
Choose an answer
212
o
C
180
o
C
100
o
C
110
o
C
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Question # 6
Specific heat of water is J kg
-1
K
-1
IS:
Choose an answer
4200
4000
1000
2500
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Question # 7
The device that is used to measure the temperature of a body called
Choose an answer
Thermometer
Acidimeter
Barometer
Clock timer
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Question # 8
Crocus flower open when the temperature is:
Choose an answer
23
o
C
26
o
C
29
o
C
32
o
C
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Question # 9
There are types of thermometer:
Choose an answer
1
2
3
4
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Question # 10
Ice at ............ °C is more effective in cooling.
Choose an answer
0
-1
-2
-3
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Question # 11
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:
Choose an answer
Hv = m/ΔQv
Hv = mΔQv
Hv = cmΔQv
Hv =ΔQv/m
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Question # 12
Length of a rod is L∘ on temperature T∘. After heating upto temperature T, its length L becomes
Choose an answer
L = L∘ (1 + αΔT)
L = L∘ (1 + ΔT)
L = L∘ (1 - αΔT)
L = L∘ (1 -ΔT)
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Question # 13
If 'm' is a mass of a body and 'c' is its specific heat, then its heat capacity is a given by
Choose an answer
m/c
c/m
mc
mc2
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