Question # 1

How should the condition be changed to prevent the volume of a given gas from expanding when its mass is increased

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Temperature is lowered and pressure is increased

Temperature is increase and pressure is lowered

Temperature and pressure both are lowered

Temperature and pressure both are increased

The commonly used unit of pressure by meteorologists is.

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Atmosphere

Pascal

Milli

Pound inch3

If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will

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Remain unchanged

Increase four times

Reduce to 1/4

Be doubled

The volume of a gas at 0 oC is 273 dm3, the pressure remaining constant. At which temperature its volume will be doubled.

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273 K

273 ^oC

546 ^oC

316 K

Density of a gas is usually expressed in

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kg m-3

kg dm-3

g dm-3

g cm-3

The highest temperature above which a gas cannot be liquified, no matter how much the pressure is applied is known as

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Boiling temperature

Consulate temperature

Absolute zero

Critical temperature

Pressure remaining constant, at which temperature the volume of a gas will become twice of what it is at 0 ^oC

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546 ^oC

200 ^oC

546 K

273 K

More ideal gas at room temperature is.

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CO2

NH3

SO2

N2

Critical temperature of CO2 gas is.

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31.1 ^oC

13.1 K

13.1 ^oC

1.31 ^oC

Vapour pressure of liquid depends upon

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Amount of liquid

Surface area

Temperature

Size of container

The deviation of a gas from ideal behaviour is maximum at.

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-10 ^oC and 5.0 atm

-10 ^oC and 2.0 atm

100 ^oC and 2.0 atm

0 ^oC and 2.0 atm

Noon has low critical temperature and pressure as compared to other gases. the most probable reason is that

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Its octet is complete

It is a monoatomic gas

It has very low polarizability

It has least forces of attraction

Rate of diffusion of CO and N₂are same at room temperature due to the reason, that

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Both are diatomic molecules

Both have same multiple bond in them

Both have lone pairs in them

Both have same molar masses

A real gas obeying Van der Waal's equation will resemble ideal gas if.

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Both a and b are large

Both a and b are small or zero

A is small and b is large

A is large and b is small

What are the SI of excluded volume 'b' in Vander waal equation.

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dm³ mol -1

m3 mol -1

mol dm-3

mol m-3

Pressure remaining constant at which temperature the volume of a gas will come twice of what it is at 0 ^oC

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546 ^oC

200 ^oC

546 K

273 K

If absolute temperature of gas is doubled and the pressure is reduced to one half, the volume of the gas will.

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Remain unchanged

Increase four times

Reduce to 1/4

Be doubled

At which distance a molecule is present from its neighbor molecules of its own diameter, at room temperature.

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100 times

200 times

300 times

400 times

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Chemistry Fsc Part 1 Chapter 3 Online Test MCQs With Answers

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