Question # 1

Liquids are less common than

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Solids

Plasmas

Gases

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

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 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.

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

Boyle's law is represented as :

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P∞ 1/T

V and 1/P

P∞P

P∞1/P

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

Cooling happens under the Joule Thomson Effect due to sudden

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Contraction

Absorption

Expansion

All 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 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

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

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

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Isobaric

Isothermal

Isotherm

None of above

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

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

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

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

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 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

In solids, the temperature of is the measure of

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Rotational kinetic energies

transnational kineticenergies

Vibrationalkineticenergies

None of the above

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 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

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

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 intramolecular forces in gases are

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Weak

Normal

Very weak

Strong

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

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.

All gases can be compressed by

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Keeping constant pressure

Decreasing pressure

Increasing pressure

None of above

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