Home PYQs UPPSC UPPSC MCQs Prelims 2017 (GS Paper I)

Question

The stench due to leakage from the LPG cylinder is because of:

  1. Methane
  2. Propane
  3. Butane
  4. Ethyl mercaptan

Answer:

Option D: Ethyl mercaptan

Detailed Solution:

The correct answer is “Ethyl mercaptan”.

Ethyl mercaptan (also known as ethanethiol) is a sulfur-containing compound that is added to LPG (liquefied petroleum gas) to give it a distinctive odor. This is a safety measure to help detect leaks, as LPG itself is odorless.