The most commonly used chemical coagulant in water treatment is________________?
Correct answer: B. Alum
- A. Ferrous sulphate
- B. Alum
- C. Lime
- D. Hydrazine
Explanation
Alum, usually aluminium sulphate, hydrolyses in water to form gelatinous aluminium hydroxide flocs that trap colloids and suspended impurities. Ferrous sulphate and lime can also assist coagulation, but alum is the most commonly used coagulant.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
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.
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
Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream ?
Nitrogen oxides (NOx) is not produced in the ______________ industry?
What are the methods of treatment & disposal of radioactive wastes ?
Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes_________________?
Water filtration rate in a rapid sand filter ranges from ______________ kilolitres/m2/hr?
Which of the following sources is responsible for maximum air pollution ?