Physical Chemistry UPSC Questions

Chemistry

Physical Chemistry MCQ Questions


13.
Solid, liquid, gas states of matter arise due to the variation in the characteristics of the _____ of matter.
A.
Force
B.
Diffusion
C.
Velocity
D.
Particles
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ANSWER :
D. Particles
14.
With reference to the role of biofilters in Recirculating Aquaculture System, consider the following statements :
1. Biofilters provide waste treatment by removing uneaten fish feed.
2.Biofilters convert ammonia present in fish waste to nitrate.
3.Biofilters increase phosphorus as nutrient for fish in water.
How many of the statements given above are correct?
UPSC - 2023
A.
Only one
B.
Only two
C.
All three
D.
None
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ANSWER :
B. Only two
15.
Which of the following has a tendency to maintain its shape when subjected to outside force?
A.
Liquids
B.
Solids
C.
Gases
D.
Plasma
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ANSWER :
B. Solids
16.
The liquids have no fixed shape but have a fixed _____
A.
Shape
B.
Force
C.
Volume
D.
Energy
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ANSWER :
C. Volume
17.
Liquids flow and change shape, so they are not rigid but can be called _____
A.
Fluid
B.
Plasma
C.
Ions
D.
Sizes
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ANSWER :
A. Fluid
18.
The aquatic animals can breathe under water due to the presence of dissolved _____ in water
A.
Carbon-di-oxide
B.
Carbon-monoxide
C.
Methane
D.
Oxygen
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ANSWER :
D. Oxygen