# Presence of carbonaceous matter in the sewage _____ ? with Answer - Chemical Engineering Mcqs | TestPrep

> Solved MCQ: Presence of carbonaceous matter in the sewage _____ ? Correct Answer: D. All A, B. and C.. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# Presence of carbonaceous matter in the sewage _____ ?

Direct Answer & Quick Reference

The correct option is **D. All A, B. and C.**.

A. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic

B. Reduces sulphate ions to sulphides causing obnoxious smell

C. Increases the quantity of chlorine used for its purification

D. All A, B. and C. **(Correct Answer)**

✨ Explain with AI

Verified Key: D. All A, B. and C.
Solved by 1,322+ students

Verified against official examination board answer keys and standard curriculum textbooks.

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