Multiple choice

Which of the following is added to the LPG to make it possible to detect any leakage?

  1. Vaporized sulphur

  2. Ethyl mercaptate

  3. Hydrogen sulphide

  4. Fluorine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ethyl mercaptan (the spelling used is 'mercaptate' here) is added to LPG because it has a very strong, unpleasant odor that makes leaks immediately detectable. Pure LPG is odorless, so this odorant is a critical safety measure. The other options are not used for this purpose.