NEET Solved Paper 2018 Question 31

Question: Given van der Waals constant for $ N{H_3}\text{,}{H_2}\text{,}{O_2} $ and $ C{O_2} $ are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied? [NEET - 2018]

Options:

A) $ {O_2} $

B) $ {H_2} $

C) $ N{H_3} $

D) $ C{O_2} $

Show Answer

Answer:

Correct Answer: C

Solution:

  • van der waal constant a, signifies intermolecular forces of attraction. Higher is the value of a, easier will be the liquefaction of gas.