Question # 1

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

In solids, the temperature of is the measure of

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Rotational kinetic energies

transnational kineticenergies

Vibrationalkineticenergies

None of the above

In gases and liquids, temperature is the measure of :

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Average transnational kinetic energies of molecules.

Average vibrational kinetic energies of molecules.

Average rotational kinetic energies of molecules.

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

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 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

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

Which of the following is the simplest form of matter?

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Gaseous state

Liquid State

Solid State

All of above

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

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.

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

Which of the following is the simplest form of matter?

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Gaseous state

Liquid state

Solid state

All 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

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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They spread throughout the vessel

Pressure is due to collision

There are larger spaces between the molecules

Molecules are arranged regularly

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

All gases can be compressed by

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Keeping constant pressure

Decreasing pressure

Increasing pressure

None of above

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

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

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

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 intramolecular force in gases are :

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Weak

Normal

Very weak

Strong

The intramolecular forces in gases are

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Weak

Normal

Very weak

Strong

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

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

Cooling happens under the Joule Thomson Effect due to sudden

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Contraction

Absorption

Expansion

All of above

Gases shows uniform behavior toward their :

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Internal conditions

External conditions

Internal and external conditions

None of above

A graph between P and PV at constant temperature and number of mole is parallel to

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y axis

z axis

x axis

pressure axis

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

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

Liquids are less common than

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Solids

Plasmas

Gases

All of above

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 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 density of a gas is directly proportional to pressure, inversely proportional to temperature and directly proportional to

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Viscosity

Molar mass

Momentum

All of above

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