Question # 1

If the number of gas molecules are doubled in a certain volume of a gas, the pressure is.

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Decreased to half

Doubled

Increased to four time

Remains unchanged

Gas equation is derived by combining

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Avogadro's and Charles's Law

Boyle's and Charles's Law

Avogadro's and Boyle's Law

Avogadro's, Boyle's and Charles's Law

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

Which of the following will have highest rate of diffusion

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O2

CO2

NH3

SO2

If temperature of one mole of ideal gas at 273 K and one atmospheric pressure is increased by 1 K, amount of energy absorbed is.

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0.082 dm3 atm

1.987 cal.

8.313 J

All are correct.

Total pressure of mixture of two gases is.

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The sum of their partial pressures.

The difference of their partial pressures

The product of their practical pressures

The ratio of their partial pressures

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

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Remains uncharged

Increase four time

Reduce to 1/4

Be doubled

If 2 mol of an ideal gas at 546 K occupy a volume of 44.8 dm3, the pressure must be.

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1 atm

2 atm

3 atm

4 atm

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

The rate of diffusion of a gas is

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Directly proportional to its density

Directly proportional to molecular mass

Inversely proportional to its density

Inversely proportional to square root of its molecular mass

Keeping the temperature constant of the gas is expanded.

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Pressure will decrease

Temperature will increase

Kinetic energy of molecules will increase

No. of gas molecules increases

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

Weak intermolecular forces are present in.

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Only gases

Only liquid

Only solids

gases, liquids and solids

If we plot a graph between I/V at x-axis and pressure at Y -axis

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a parabolic graph is obtained

By increasing temperature straight line move toward x axis

By increases temperature straight line move toward y axis.

No. change in line by increasing temperature.

Vapour pressure of liquid depends upon

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Amount of liquid

Surface area

Temperature

Size of container

Which is not example of natural plasma.

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Lightening bolt

Aurora

Neon sign

Sum

Gases deviate from ideal behaviour at high pressure. Which of the following is correct for non-ideal behaviour of gases

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At high pressure, the gas molecules move in one direction only

At high pressure, the collisions between the gas molecules are increased

At high pressure, the volume of the gas becomes insignificant

At high pressure, the intermolecular attraction becomes significant

Density of a gas is usually expressed in

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kg m-3

kg dm-3

g dm-3

g cm-3

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