Water-Pollution
Question 1 |
During the physical treatment process of wastewater, what is the correct order of following operations to be followed?
A) Flocculation
B) Filtration
C) Screening
D) Sedimentation
Choose the correct answer from the options given below:
A) Flocculation
B) Filtration
C) Screening
D) Sedimentation
Choose the correct answer from the options given below:
(C), (D), (B), (A)
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(C), (D), (A), (B)
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(B), (D), (A), (C)
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(B), (C), (D), (A)
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Question 2 |
Lower Level of Dissolved Oxygen (DO) in water
A. is bad for human consumption.
B. may have been caused due to presence of oxygen demanding waters.
C. threatens the fish and aquatic life.
D. cannot be used for irrigation purposes.
E. may cause undesirable taste and odour.
Choose the most appropriate answer from the options given below:
A. is bad for human consumption.
B. may have been caused due to presence of oxygen demanding waters.
C. threatens the fish and aquatic life.
D. cannot be used for irrigation purposes.
E. may cause undesirable taste and odour.
Choose the most appropriate answer from the options given below:
A, B and C only | |
A, B and D only | |
B, C and E only | |
C, D and E only |
Question 3 |
What is the correct sequence, from initial to final, of surface wastewater treatment?
A. Disinfection
B. Sedimentation
C. Filtration
D. Screening
Choose the correct answer from the options given below :
A. Disinfection
B. Sedimentation
C. Filtration
D. Screening
Choose the correct answer from the options given below :
A, B, C, D | |
A, B, D, C | |
D, B, A, C
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D, B, C, A |
There are 3 questions to complete.