Question # 1

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

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.

Pressure remaining constant, at which temperature volume of gas will become twice of what it is at 0°C ?

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546

200

546K

273K

Gases shows uniform behavior toward their :

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Internal conditions

External conditions

Internal and external conditions

None of above

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

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 Solids, the temperature is the measure of

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Rotational kinetic energies

Translational kinetic energies

Vibrational kinetic energies

None of above

Which Statement about gases is not correct?

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They spread throughout the vessel

Pressure is due to collision

There are larger spaces between the molecules

Molecules are arranged regularly

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

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

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Evaporation

Effusion

Conduction

Difusion

The relationships between volume of a given amount of gas and the prevailing conditions of temperature and pressure are

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Charle's Law

Graham's Law

Boyle's Law

Gas Laws

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 highest temperature at which a substance can exist as a liquid is called its

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Critical temperature

Zero temperature

Absolute temperature

None of above

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

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V and T

P and V

P and 1/V

P and PV

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

Cooling happens under the Joule Thomson Effect due to sudden :

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Contraction

Absortption

Expansion

All of above

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 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

Liquids are less common than

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Solids

Plasmas

Gases

All of above

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

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Remains constant

Double

One half

None of above

Liquids are less common than :

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Solids

Plasmas

Gases

All of above

All gases can be compressed by

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Keeping constant pressure

Decreasing pressure

Increasing pressure

None 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

Equal masses of methane and oxygen are mixed in an empty container at 25°CThe fraction of total pressure exerted by oxygen is :

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1/2

8/9

1/9

16/17

Cooling happens under the Joule Thomson Effect due to sudden

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Contraction

Absorption

Expansion

All of above

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 of the following will have the same number of molecules at STP ?

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280 CM³ of CO² and 280 CM³ of N₂O

11.2 dm3 of O₂ and 32 g of O₂

44 g of CO₂ and 11.2 dm³ of CO

28 g of N2 and 5.6 dm³ of oxygen

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

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

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

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Evaportation

Effusion

Conduction

Diffusion

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