MDCAT Chemistry Chapter 3 Gases Online Test MCQs With Answers

Question # 1

Charles's law is only obeyed at which temperature scale

Choose an answer

Celsius

Kelvin

Fahrenheit

both A&B

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Question # 2

Which of the statement is applicable for both ideal and real gases molecules?

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Have no forces of attraction

Collisions between the molecules is elastic

Molecules are in random movement

The actual volume of gas is negligible as compared to the volume of gas

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Question # 3

The volume of gas depends upon the------- moleules

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Size of

Space between

Molecular weight

both a and b

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Question # 4

If volume of an ideal gas at 0C° 536cm3, what is volume at 1°C

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373 cm3

646 cm3

Becomes 0cm3

746 cm3

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Question # 5

An ideal gas expands according to PV=constant. On expansion, the temperature of gas

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will rise

will drop

cannot be determined because the exteral pressure is not known

will remain same

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Question # 6

If a gas expands at constant temperature

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The pressure decreases

The Kinetic energy of the molecules remains the same

The kinetic energy of the molecules decreases

The number of molecules of the gas increase

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