Question # 1

The partial pressure of oxygen in lungs is

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760 torr

320 torr

159 torr

116 torr

The total kinetic energy of one mole of an ideal gas is given by

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3/2 RT

1/2 KT

1/2 RT

3/2 KT

At constant temperature in a given mass of and ideal gas.

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The ratio of pressure and volume remains constant

Volume always remains constant

Pressure always remains constant

The product of pressure and volume remains constant

The rate of diffusion of a gas of molar mass 72 as compared to H2 will be.

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1/6 times

1.4 times

6 times

same

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

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

A real gas can be liquefied if.

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Temperature is more than critical temperature.

Temperature is less than critical temperature

Pressure is more than critical pressure and temperature is less than critical temperature

Its pressure is less than critical pressure

the order of the rate of diffusion of gases NH₃, SO₂, CI₂and CO₂is

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NH₃> SO₂>CI₂CO₂

NH₃> CO₂> SO₂> CI₂

CI₂> SO₂> CO₂> NH₃

NH₃> CO₂> CI₂> SO₂

Partial pressure of oxygen in the air is.

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156 torr

157 torr

158 torr

159 torr

Which of the following will have highest rate of diffusion

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O2

CO2

NH3

SO2

Which of the following will have the same number of molecules at STP

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280 cm³of CO₂and 280 cm³of N₂O

11.2 dm³of O₂and 32 g of O₂

44 g of CO₂and 11.2 dm³of CO

28 g of N₂and 5.6 dm³of oxygen

Which one of the following expressions is for ideal gas equation.

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PM= nRT

PV = nRT

PV = dRT

PV= nTP

Observed pressure is less than ideal pressure for any gas due to

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Intermolecular forces

Size of molecules

Boiling point of molecules

Both a and c

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 molar volume of CO2 is maximum at.

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STP

127 ^oC and 1 atm

0 ^oC and 2 atm

273 ^oC and 2 atm

The commonly used unit of pressure by meteorologists is.

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Atmosphere

Pascal

Milli

Pound inch3

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

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