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 temperature recorded by Kelvin scale is
A. 0K
B. 273K
C. 373K
D. Absolute scale is unable to record this temperature
Show Answer…...Hide AnswerCorrect Answer: B. 273K
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One liter of an unknown gas weighs 1.25 grams at S.T.P, one possible formula for the gas is
A. CO2
B. CO
C. O2
D. SO2
Show Answer…...Hide AnswerCorrect Answer: B. CO
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If pressure on a gas is increased from 2 atm to 4 atm than its volume will decrease from
A. 6L to 4L
B. 8L to 2L
C. 3L to 1L
D. 4L to 2L
Show Answer…...Hide AnswerCorrect Answer: D. 4L to 2L
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A container with a porous wall has a mixture of H2, He, N2 and O2. Which of these gases will take maximum time in getting out of the container?
A. H2
B. He
C. N2
D. O2
Show Answer…...Hide AnswerCorrect Answer: D. O2
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If the temperature of the atmosphere is 30°C then which of the following will have highest average speed:
A. O2
B. H2
C. Ne
D. N2
Show Answer…...Hide AnswerCorrect Answer: B. H2
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I heard Islamian genius saying that glass must be a super cooled liquid. The reason that he might have in his mind is that glass has
A. definite volume
B. definite shape
C. crystalline structure
D. no crystalline structure
Show Answer…...Hide AnswerCorrect Answer: D. no crystalline structure
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Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally
A. ionic substances
B. metallic substances
C. molecular solids
D. covalent network solids
Show Answer…...Hide AnswerCorrect Answer: B. metallic substances
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