Water-Pollution
Question 1 |
The most important pollutants that cause degradation of water quality in rivers and streams are
-
(a) Bacteria
(b) Nutrients
(c) Metals
(d) Total dissolved solids
(e) Algae
Choose the most appropriate answer from the options given below:
(a), (b) and (c) | |
(a), (b) and (d) | |
(a), (b), (d) and (e) | |
(a), (b), (c), (d) and (e) |
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 |
Chlorine in drinking water is used for
A) Disinfection
B) Removal of hardness
C) Odor treatment
D) turbidity control
E) Removal of iron and manganese
Choose the correct answer from the options given below:
A) Disinfection
B) Removal of hardness
C) Odor treatment
D) turbidity control
E) Removal of iron and manganese
Choose the correct answer from the options given below:
A,C,E only
| |
A,B,C only
| |
A,D,E only
| |
C,D,E only |
There are 3 questions to complete.