A gas such as carbon monoxide would be most likely to obey the ideal gas law at?
1. High temperature and low pressure
2. Low temperature and high pressure
3. High temperature and high pressure
4. Low temperature and low pressure

Subtopic:  Kinetic Theory of Gas |
77%
From NCERT
NEET - 2015
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Equal masses of H2, O2 and CH4 have been taken in a container of volume V at temperature 27 ºC in identical conditions. The ratio of the volumes of gases H2:O2 : CH4 would be:

1. 8:16:1
2. 16:8:1
3. 16:1:2
4. 8:1:2

Subtopic:  Gas Laws |
75%
AIPMT - 2014
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Maximum deviation from ideal gas is expected from:
1. N2 (g)
2. CH4 (g)
3. NH3 (g)
4. H2 (g)
Subtopic:  Compressibility Factor |
71%
From NCERT
AIPMT - 2013
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What is the density of N2 gas at 227 °C and 5.00 atm pressure?

(R = 0.082 L Atm K–1 mol–1)
1. 1.40 g/L
2. 2.81 g/L
3. 3.41 g/L
4. 0.29 g/L
Subtopic:  Gas Laws |
79%
From NCERT
NEET - 2013
Hints

50 mL of each gas A and of gas B takes 200 and 150 s respectively for effusing through a pinhole under the similar conditions. If the molecular mass of gas B is 36, the molecular mass of gas A will be:

1. 96

2. 128

3. 32

4. 64

Subtopic:  Graham's Law |
75%
AIPMT - 2012
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A certain gas takes three times as long to effuse out as helium. Its molecular mass will be:

1.  36 u
2.  64 u
3.  9 u
4.  27 u

Subtopic:  Graham's Law |
72%
AIPMT - 2012
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For real gases van der Waals equation is written as

$\left(P+\frac{a{n}^{2}}{{V}^{2}}\right)$ $\left(V-nb\right)$ $=$ $nRT$

where 'a' and 'b' are van der Waals constants.

Two sets of gases are:
(I) ${O}_{2},$ $C{O}_{2}$ $,$ ${H}_{2}$ $and$ $He$        (II)$C{H}_{4},$ ${O}_{2}$  $and$ ${H}_{2}$
The gases given in set-I are in increasing order of 'b' and gases given in set-II are in decreasing order of 'a'. Select the correct order from the following:

1. $\left($ $I\right){O}_{2} ${H}_{2}>{O}_{2}>C{H}_{4}$

2. $\left($ $I\right){H}_{2} $C{H}_{4}>{O}_{2}>{H}_{2}$

3. $\left($ $I\right){H}_{2}<{O}_{2} ${O}_{2}>C{H}_{4}>{H}_{2}$

4. $\left($ $I\right)He<{H}_{2}  ${O}_{2}\left(II\right)$ $C{H}_{4}>{H}_{2}>{O}_{2}$

Subtopic:  van der Waal’s Correction |
68%
From NCERT
AIPMT - 2012
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A gaseous mixture was prepared by taking equal moles of CO and N2. If the total pressure of the mixture was found to be 1 atmosphere, then the partial pressure of the nitrogen (N2) in the mixture is:

1.  0.8 atm
2.  0.9 atm
3.  1 atm
4.  0.5 atm

Subtopic:  Dalton's Law |
82%
From NCERT
AIPMT - 2011
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Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 second respectively. The molecular mass of A is 49 u. Molecular mass of B will be:

1.  12.25 U

2.  6.50 U

3.  25.00 U

4.  50.00 U

Subtopic:  Graham's Law |
81%
AIPMT - 2011
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By what factor does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled?

1.  2.8
2.  4.0
3.  1.4
4.  2.0

Subtopic:  Molecular Velocity |
73%
AIPMT - 2011
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