Question # 1

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

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

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

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.

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

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

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

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

All gases can be compressed by :

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Keeping constant pressure

Decreasing pressure

Increasing pressure

None of the above

Cooling happens under the Joule Thomson Effect due to sudden

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Contraction

Absorption

Expansion

All of above

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

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

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

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Evaportation

Effusion

Conduction

Diffusion

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

All gases can be compressed by

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Keeping constant pressure

Decreasing pressure

Increasing pressure

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

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 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 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

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

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Isobaric

Isothermal

Isotherm

None of above

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

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

Liquids are less common than :

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Solids

Plasmas

Gases

All of above

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