Question

Which among the following gases liquefy easily?

• A. Oxygen
• B. Helium
• C. Chlorine
• D. Nitrogen

Hint:

Gases with higher molecular weight and stronger intermolecular forces are more likely to liquefy easily. Chlorine is an example of such a gas.

Answer 1

The Correct Option is C

Step 1: Understanding liquefaction of gases.
Liquefaction of gases is easier for those with higher molecular weights and stronger intermolecular forces. These gases can be more easily condensed into a liquid phase.
Step 2: Analyzing the options.
(A) Oxygen: Oxygen is a relatively small molecule and does not liquefy easily under standard conditions.
(B) Helium: Helium is a noble gas and has very weak intermolecular forces, making it difficult to liquefy even at very low temperatures.
(C) Chlorine: Chlorine has a higher molecular weight and stronger intermolecular forces compared to oxygen and helium, making it more likely to liquefy.
(D) Nitrogen: Nitrogen also has weak intermolecular forces and liquefies under conditions similar to oxygen.
Step 3: Conclusion.
The correct answer is (C) Chlorine, as it liquefies more easily due to stronger intermolecular forces.