Question # 1

The deviation of a gas from ideal behavior is maximum at :

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-10°C and 5.0 atm

-10°C and 2.0 atm

100°C and 2.0 atm

0°C and 2.0 atm

Keeping the temperature constant, if the gas is expanded

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kinetic energy of molecules will increase

Number of gas molecules increases

Temperature will increases

Pressure will decrease

Gases exert pressure on walls of container because the gas molecules :

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Obey gas laws.

Have definite volume.

Collide with the walls of container.

Collide with each other.

The order of the rate of diffusion of gases NH₃,SO₂, CL₂, and CO₂ IS :

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NH_{3 >}SO_{2 >}CL_{2 >}CO₂

NH_{3 >}CO_{2 >}SO_{2 >}CL₂

CL_{2 >}SO_{2 >}CO_{2 >}NH₃

NH_{3 >}CO₂_>CL_{2 >}SO₂

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will be

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Remain unchanged

Doubled

Reduced

Increased four times

Liquids are less common than

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Solids

Plasmas

Gases

All of above

According to Boyle's law. which parameters give a straight line parallel to x-axis, when we plot a graph between

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V and T

P and V

P and 1/V

P and PV

Gases of air always remain in random motion and do not settle due to :

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Difference in molecular masses of air gases.

Difference in partial pressure of gas molecules.

Unequal number of different gas molecules.

Elastic collision of gas molecules.

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :

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remain unchanged

increase four times

reduce to 1/4

be doubled

In gases and liquids, temperature is the measure of

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Average translational kinetic energies of molecules

Average vibrational kinetic energies of molecules

Average rotational kinetic energies of molecules

None of above

Cooling happens under the Joule Thomson Effect due to sudden :

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Contraction

Absortption

Expansion

All of above

All gases can be compressed by :

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Keeping constant pressure

Decreasing pressure

Increasing pressure

None of the above

The movement of molecules from a region of high pressure to vacuum is called :

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Evaporation

Effusion

Conduction

Difusion

The product of pressure and volume remains constant when temperature and quantity of gas is

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zero

variable

kept constant

None of these

The molar value of CO₂is maximum at :

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STP

127°C and 1 atm

0°C and 2 atm

273°C and 2 atm

For a gas obeying Boyle's law if pressure is doubled, the volume becomes :

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Remain constant

Double

One half

None of above

A graph b/w P and 1/V at constant temperature and number of moles is parallel to :

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Y-axis

Z-axis

X-axis

None of above

In Boyle's law which of the following pair remains constant

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Temperature and quality of a gas

Pressure and quality of a gas

Temperature and pressure

Temperature and quantity of a gas

The ratio of volume to temperature on Kelvin scale is constant according to

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Charle's law

Newton's law

Coulomb's law

Boyle's law

The graph between pressure and volume at constant temperature for a gas is

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Isobaric

Isothermal

Isotherm

None of above

Which of the following is the simplest form of matter?

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Gaseous state

Liquid state

Solid state

All of above

A real gas obeying van der Waals' equation will resemble ideal gas if :

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both 'a' and 'b' are large

both 'a' and 'b' are small

'a' is small and 'b' is large

'a' is large and 'b' is small

Boyle's law is represented as :

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P∞ 1/T

V and 1/P

P∞P

P∞1/P

Gases of air, always remain in random motion and do not settle due to

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Difference in molecular masses of air gases

Difference in partial pressure of gas molecules

Unequal number of different gas molecules

Elastic collision of gas molecules

Which statement about gases is not correct ?

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The spread throughout the vessel.

Pressure is due to collision

There are large spaces between the molecules.

molecules are arranged regularly.

In solids, the temperature of is the measure of

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Rotational kinetic energies

transnational kineticenergies

Vibrationalkineticenergies

None of the above

The density of a gas is directly and volume at constant temperature for a gas is

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Isobaric

Isothermal

Isotherm

None of above

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of gas will :

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remain unchanged

increase four times

reduce to 1/4

be doubled

How should condition be changed to prevent the volume of a given gas from expanding whine its mass is increased ?

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Temperature is lowered and pressure is increased

Temperature is increasedand pressure is lowered

Temperature and pressure both are lowered

Temperature and pressure both are increased

Gases exert pressure on walls of container because the gas molecules

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Obey gas laws

Have definite volume

Collide with the walls of container

Collide with each other

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