WBCS.LIVE practice question

How many times is chlorine gas heavier than air?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 1.27
  2. 2.50
  3. 3.81
  4. 5.0

Correct answer and explanation

Correct answer: 2.50

Explanation: āœ… Correct Answer: B. 2.50 šŸ“š Explanation: Chlorine is a heavy, greenish-yellow gas at room temperature. Its molecular weight is approximately 71, while the average molecular weight of air is about 29. By dividing the two (71 / 29), we find that chlorine is roughly 2.45 to 2.50 times heavier than air. Because it is denser, chlorine gas tends to stay close to the ground during a leak.