CSS OPTIONAL SUBJECTS MCQs

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.

The partial pressure exerted by the water vapours is called

A. Surface tension
B. Aqueous tension
C. Vapour pressure
D. Hydraulic pressure

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Correct Answer: B. Aqueous tension
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The highest temperature at which a substance can exist as a liquid is called its

A. Critical temperature
B. Standard temperature
C. Absolute temperature
D. Upper consulate temperature

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Correct Answer: A. Critical temperature
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What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume?

A. 98.5 atm
B. 96.7 atm
C. 95.8 atm
D. 97.1 atm

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Correct Answer: A. 98.5 atm
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The processes of effusion and diffusion are best to understand by

A. Daltons law
B. Avogadro’s law
C. Grahams law
D. Charles law

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Correct Answer: C. Grahams law
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Who made volume and pressure correction to explain the deviation of gases from ideal behaviour?

A. Clausius
B. Boltzmann
C. Charles
D. Vander Waal

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Correct Answer: D. Vander Waal
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The non-ideal behaviour results chiefly from

A. Intermolecular attraction and infinite volume
B. Elastic collisions and finite volume
C. Intermolecular attractions and finite volume
D. Intermolecular attraction only

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Correct Answer: C. Intermolecular attractions and finite volume
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The gases become non-ideal at

A. High temperature and high pressure
B. Low temperature and low pressure
C. High temperature and low pressure
D. Low temperature and high pressure

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Correct Answer: D. Low temperature and high pressure
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