The introduction of the Kelvin scale in thermometry is according to
A. Boyles law
B. Charles law
C. Daltons law
D. Grahams law
Correct Answer: B. Charles law
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Here, you may find CSS Optional Subjects MCQs. If you want to prepare MCQs of optional subjects, CSS MCQs platform is here to serve you while preparing your MCQs portion of your CSS Exam. Please practice these CSS Optional Subjects MCQs on a daily basis.
0.5 mole of nitrogen gas and 0.5 mole of carbon monoxide gas at STP have same
A. Mass
B. Atoms
C. Both B and C
D. None of these
Correct Answer: C. Both B and C
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At constant temperature the pressure of an ideal gas is doubled its density becomes
A. Half
B. Double
C. Same
D. None
Correct Answer: B. Double
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The diffusion of gases at absolute zero will be
A. Unchanged
B. Slightly decreased
C. Slightly increased
D. Zero
Correct Answer: D. Zero
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Which of the following option is incorrect about gases?
A. All molecules move with the same speed
B. All molecules behave independently
C. PV / RT = n
D. All gases cannot be liquefied through Linds Method
Correct Answer: A. All molecules move with the same speed
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The critical temperature for different gases is different and depends upon
A. Size of molecule
B. Shape of molecule
C. Intermolecular attractions
D. All of the above
Correct Answer: D. All of the above
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What is the abundant form of matter on earth?
A. Gas
B. Liquid
C. Solid
D. Plasma
Correct Answer: C. Solid
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