Question # 1

Gases show uniform behaviour towards their

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Internal conditions

External conditions

Internal and external conditions

None 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.

Boyle's law doesn't fail even :

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Temperature is extremely high

Pressure is extremely high

Mixture of gas is taken

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

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

In solids, the temperature of is the measure of

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Rotational kinetic energies

transnational kineticenergies

Vibrationalkineticenergies

None of the above

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

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

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

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

Boyle's law does not fall even

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Temperature is extremely high

Pressure is extremely high

Mixture of gases is taken

all 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.

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

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 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.

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

Boyle's law is represented as :

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P∞ 1/T

V and 1/P

P∞P

P∞1/P

Gases shows uniform behavior toward their :

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Internal conditions

External conditions

Internal and external conditions

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

All gases can be compressed by :

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Keeping constant pressure

Decreasing pressure

Increasing pressure

None of the above

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

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

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

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

The intramolecular forces in gases are

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Weak

Normal

Very weak

Strong

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

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Isobaric

Isothermal

Isotherm

None 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

At constant temperature when pressure of a gas is plotted against volume, the curve is

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Slanting straight line

Parabolic

Staight line, parallel to pressure axis

OF neither type

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

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

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

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Evaportation

Effusion

Conduction

Diffusion

Which of the following is the simplest form of matter?

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Gaseous state

Liquid State

Solid State

All 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

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