Physical and Chemical Changes NDA Questions

NDA Chemistry

Physical and Chemical Changes MCQ Questions


1.
The surface area and rate of evaporation are _____ proportional.
A.
Indirectly
B.
Inversely
C.
Directly
D.
None of the above
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ANSWER :
C. Directly
2.
With the increase of _____, more number of particles get enough kinetic energy and goes into vapour state.
A.
Temperature
B.
Surface area
C.
Wind speed
D.
Humidity
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ANSWER :
A. Temperature
3.
The amount of water vapour present in air is known as _____
A.
Moisture
B.
Humidity
C.
Evaporation
D.
Speed
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ANSWER :
B. Humidity
4.
Which of the following can be changed to change the state of matter?
A.
Temperature
B.
Pressure
C.
Both a and b
D.
Solution
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ANSWER :
C. Both a and b
5.
Boiling is a _____ phenomenon
A.
Surface
B.
Bulk
C.
Size
D.
Heat
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ANSWER :
B. Bulk
6.
Evaporation is a _____ phenomenon
A.
Surface
B.
Bulk
C.
Pressure
D.
Light
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ANSWER :
A. Surface