If van der Waals constant "a" for NH3, H2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, then which one of the following gases is most easily liquefied?

1. NH3
2. H2
3. O2
4. CO2

Subtopic:  Liquefaction of Gases & Liquid |
 81%
From NCERT
NEET - 2018
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The correction factor 'a' for the ideal gas equation corresponds to:
1. density of the gas molecules
2. volume of the gas molecules
3. electric field present between the gas molecules
4. forces of attraction between the gas molecules

Subtopic:  van der Waal’s Correction |
 85%
From NCERT
NEET - 2018
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Equal moles of hydrogen and oxygen gases are placed in container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?

1. 1/4         

2. 3/8         

3. 1/2           

4. 1/8

Subtopic:  Graham's Law |
 53%
NEET - 2016
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints