Multiple choice

Due to which element is the natural gas called sour gas?

  1. C

  2. P

  3. S

  4. A<font size="2">s</font>

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

Natural gas is called 'sour gas' when it contains significant amounts of hydrogen sulfide (H₂S). The sulfur content gives it corrosive properties and a rotten egg odor. Carbon (C), phosphorus (P), and arsenic (As) are not responsible for the sour designation.