Pick up the correct statement from the following?

A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers

B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated sewage in river

C. Solubility of oxygen in sewage is 95% of that of distilled water

D. All the aboveCorrect Answer

Correct Option: D. All the above

This question has been verified by the PakPrep community moderation network for competitive examination accuracy.

Subject Overview

Explore thousands of solved past paper MCQs for Civil Engineering Mcqs categorized with explanations.