Gases in chemisty Mcqs

Our collections of Multiple choice questions and answers focuses on study of Gases in Chemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams and tests and Chemical industry job interviews. One should practice our Mcqs to assimilate Gases in Chemistry comprehensively.

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1.
What is the relative rate of effusion of CO and CO2?

CO is 1.25 times faster than CO2

CO is 3.75 times faster than CO2

CO is 1.25 times faster than CO

Both diffuse at the same rate

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3.
Which of the following is not considered as an intermolecular force between molecules?

Coordinate covalent bonds

Hydrogen bonds

Debye forces

London dispersion forces

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4.
The weakest (in strength) of the following intermolecular forces is

Hydrogen bonding

Vander Waals force

Forces among the polar molecules

Ionic bond

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5.
Ideal gasses have all the following characteristics except.

Absence of intermolecular forces

Collisions among the molecules of an ideal gas are perfectly elastic

The molecules occupy no space

All of the above are correct

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6.
Which of the following statements is true about plasma

It may be the first state of matter

It is not a phase transition

It is a conductor of electricity

All of the above

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8.
Under what conditions the gases deviate from the ideal behavior?

High temperature

Low temperature

High pressure

B and c

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10.
The introduction of Kelvin scale in thermometry is according to

Boyles law

Charles law

Daltons law

Grahams law

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11.
0.5 mole of nitrogen gas and 0.5 mole of carbon monoxide gas at STP have same

Value of a

Mass

Atoms

Both b and C

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12.
At constant temperature the pressure of an ideal gas is doubled its density becomes

Half

Double

Same

None

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14.
Which of the following option is incorrect about gases?

All molecules move with same speed

All molecules behave independently

PV / RT = n

All gases cannot be liquefied through Linds Method

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15.
Critical temperature for different gases is different and depends upon

Size of molecule

Shape of molecule

Intermolecular attractions

All of the above

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