The compressibility of a gas is less than unity at STP. Therefore:

(1) Vm > 22.4 litre                           

(2) Vm < 22.4 litre

(3) Vm = 22.4 litre                           

(4) Vm = 44.8 litre

Subtopic:  Compressibility Factor |
 74%
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The numerical value of Cp-Cv for one mole of the ideal gas is equal to:

1. R             

2. R/M

3. M/R         

4. None of the above

Subtopic:  Kinetic Theory of Gas |
 81%
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In which case is the rate of diffusion highest if all are present in the same container at the same temperature:

1. 4 g H2

2. 32 g O2

3. 22 g CO2

4. 56 g N2

Subtopic:  Graham's Law |
 73%
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Partial pressure of Hydrogen in Flask containing 2 gm of H2 and 32 gm of SO2 is 

1. 1/16 of total pressure

2. 1/2 of total pressure

3. 2/3 of total pressure

4. 1/8 of total pressure

Subtopic:  Ideal Gas Law |
 77%
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At high pressure, the compressibility factor 'Z' is equal to -

1.  Unity

2. 1-PbRT
3. 1+PbRT

4.  Zero

Subtopic:  Compressibility Factor | van der Waal’s Correction |
 73%
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The density of O2(g) is maximum at:-

1. STP

2. 273 K and 2 atm 

3. 546 K and 1 atm

4. 546 K and 2 atm

Subtopic:  Gas Laws |
 67%
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A gas diffuses four time quickly as oxygen. The molecular weight of gas is:

1. 2

2. 4

3. 8

4. 16

Subtopic:  Graham's Law |
 78%
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If density of vapours of a substance of molar mass 18 gm / mole at 1 atm pressure and 500 K is 0.36 kg m–3 , then value of Z for the vapours is : (Take R = 0.082 L atm mole K–1)

(1) 4150

(2) 5041

(3) 1.1

(4) 0.9

Subtopic:  Ideal Gas Law |
 64%
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A sample of water gas has a composition by volume of 50% H2, 45% CO and 5% CO2. Calculate the volume in litre at S.T.P. of water gas which on treatment with excess of stream will produce 5 litre H2. The equation for the reaction is : CO + H2O CO2+ H2

(1) 4.263 Litre

(2) 5.263 Litre

(3) 6.263 Litre

(4) 7.263 Litre

Subtopic:  Gas Laws |
 67%
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A 2 m long tube closed at one end is lowered vertically into' water until the closed end is flush with the water surface. See figure below. Calculate the water level height in the tube. (Barometric pressure –1 atm =10 m of hydrostatic water head, Temperature = 25°C, Density of, water = 1.00 g/ml. Neglect water vapour pressure).

(1) 1.01 m

(2) 0.29 m

(3) 1.71m

(4) 0.92 m

Subtopic:  Gas Laws |
 57%
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