Question # 1

Gases show uniform behaviour towards their

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Internal conditions

External conditions

Internal and external conditions

None of above

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

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

Cooling happens under the Joule Thomson Effect due to sudden :

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Contraction

Absortption

Expansion

All of above

The intramolecular force in gases are :

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Weak

Normal

Very weak

Strong

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

In Solids, the temperature is the measure of

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Rotational kinetic energies

Translational kinetic energies

Vibrational kinetic energies

None of above

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

Which of the following is the simplest form of matter?

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Gaseous state

Liquid state

Solid state

All 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

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

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Evaportation

Effusion

Conduction

Diffusion

The relation ships b/w volume of given amount of gas and prevailing conditions of temperature and pressure are :

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Charles's law

Graham's law

Boyle's law

Gas law

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

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

Boyle's law is represented as :

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P∞ 1/T

V and 1/P

P∞P

P∞1/P

The rate of diffusion of a gas in

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Inversely proportional to its density

Inversely proportional to square root of its molecular mass

Directly proportional to molecular mass

Directly proportional to its density

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

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

All gases can be compressed by

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Keeping constant pressure

Decreasing pressure

Increasing pressure

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

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Evaporation

Effusion

Conduction

Difusion

Absolute temperature of a gas is proportional to

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Rotational kinetic energy

Translational kinetic energy

Vibrational kinetic energy

Potential energy

In Boyle's law which of the following pair is variable :

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Temperature and quantity of a gas.

Pressure and volume

Volume and quantity of a gas.

Pressure and quantity of a gas.

The intramolecular forces in gases are

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Weak

Normal

Very weak

Strong

Number of molecules in one dm³of water is close to :

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6.02/22.4

12.04/22.4 *10²³

18/22.4*10²³

55.6*6.02*10²³* 10²³

Which of the following is the simplest form of matter?

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Gaseous state

Liquid State

Solid State

All of above

A graph between P and 1/V at constant temperature and number moles of a gas meets the

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y-axis

x-axis

origin

none 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.

The rate of diffusion of a gas is :

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Inversely proportional to its density

Inversely proportional to square root of its molecular mass

Directly proportional to molecular mass

Directly proportional to its density

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