The most commonly used substance to speed up the sedimentation of sewage is___________________?
Correct answer: A. Lime
- A. Lime
- B. Sulphuric acid
- C. Chlorine
- D. Sodium bisulphite
Explanation
Lime promotes coagulation and aggregation of suspended sewage solids, making them settle more rapidly during sedimentation. Sulphuric acid, chlorine, and sodium bisulphite serve different treatment purposes and are not the usual sedimentation aid here.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by _____________________?
______________ is an ore of lead?
Presence of H2S in raw water (to be chlorinated) results in the_____________________?
Which of the following is not produced commercially from sea water ?
Oleum produces fumes of_____________________?
Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in______________________?