Deep well water possess the rotten egg smell due to the dissolved

deep-well-water-possess-the-rotten-egg-smell-due-to-the-dissolved

Deep well water possess the rotten egg smell due to the dissolved ________

A. Sulphide

B. Sulphurous acid

C. Hydrogen sulphide

D. Hydrogen peroxide

This question was posed to me during an online interview.

My question is based upon Sources, Impurities and Hardness of Water in division Water of Applied Chemistry

The correct option is C. Hydrogen sulphide

Explanation: Deep well water possesses the rotten egg smell due to the dissolved hydrogen sulphide. The underground water is colourless and odourless.