Which of the following gases is difficult to liquefy?

Which of the following gases is difficult to liquefy?
  1. $\mathrm{O}_2$
  2. $\mathrm{SO}_2$
  3. $\mathrm{Cl}_2$
  4. $\mathrm{NH}_3$

Solution

Non-polar gas is most difficult to liquefy.

Asked in: MHT CET 2022 (08 Aug Shift 1)

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