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Chlorination - Environmental Engineering MCQs

Chlorination MCQs : Here you will find MCQ Questions related to "Chlorination" in Environmental Engineering. These Chlorination MCQ Questions Will help you to improve your Environmental Engineering knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.




Question 1

Which method Chlorination of water relatively free from suspended matter without any other treatment?

A. Plain Chlorination
B. Pre Chlorination
C. Post Chlorination
D. None of the above

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Question 2

Dosage chlorine range from?

A. 0.50-5.0mg/lit
B. 0.75-5.0mg/lit
C. 0.25-5.0mg/lit
D. 1.0-5.0mg/lit

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Question 3

The application of chlorine to raw water before any other treatment to improve the?

A. taste
B. coagulation
C. odor
D. color

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Question 4

In the presence of ammonium ions, free chlorine reacts in a stepwise manner to form ____________ species.

A. 1
B. 2
C. 3
D. 4

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Question 5

In the presence of ammonium ions, free chlorine reacts in a stepwise manner to form three species.

A. Hypochlorous acid
B. Hypochlorite ions
C. Molecular chlorine
D. Hypochlorous acid, Hypochlorite ions, Molecular chlorine

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Question 6

When the pH is between 5 and 10, the chlorine in the water acts as ______

A. Hypochlorous acid
B. Hypochlorite ions
C. Molecular chlorine
D. Hypochlorous acid hypochlorite ions

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Question 7

At what pH, chlorine in water acts as only hypochlorite ions?

A. <5
B. >5
C. >10
D. <3

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Question 8

The hypochlorous acid is ______ times effective as hypochorite ions.

A. 80
B. 90
C. 100
D. 110

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Question 9

The chlorine, which serves as a disinfectant is ___________

A. Free chlorine
B. Free Residual chlorine
C. Chlorine demand
D. Residual demand

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Question 10

The permissible limit of free residual chlorine is ___________

A. 0.02ppm
B. 0.2ppm
C. 1ppm
D. 2ppm

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