This set of Environment Management Quiz focuses on “Control Measures of Water Pollution”.
1. How agricultural management helps in the control of water pollution?
a) By giving an idea about the use of land management
b) By increase the water intake
c) By using poor soil which consumes less water
d) By encouraging farmers to use more chemicals
Explanation: Land use is one of the agricultural management which helps in the control of water pollution. It includes crop rotation systems and the proportion of the land area devoted to permanent crops relating to annual tillage crops.
2. How soil resistance can increase against erosion?
a) By maintaining the water inflow
b) By maintaining the physical structure of soil
c) By maintaining the environmental conditions
d) By increasing the manure given to the plants
Explanation: Increasing soil resistance against erosion can be achieved by maintain the physical structure of soils. Good farming practices allow for adequate inputs of organic fertilization by digging in crop residues.
3. Why ground water monitoring is important in control of water pollution?
a) To provide more quantity of water
b) To increase the chemical contains in the water
c) To provide good quality of water
d) To reduce the amount of water supplying from ground water
Explanation: Ground water monitoring techniques provide a better means of distinguishing the temporal process of ground water contamination and provide good quality of water for drinking and for other daily chores.
4. How can we reduce the effluent volume of water to maintain its pollution level?
a) Increase the upstream flow by low flow augmentation
b) Decrease the upstream flow by low flow augmentation
c) Increase the upstream flow by high flow augmentation
d) Decrease the upstream flow by high flow augmentation
Explanation: One of the measures to control water pollution is to reduce the effluent volume by increasing the upstream flow by low flow augmentation. This means releases from upstream reservoir storage from nearby water bodies.
5. In order to control the water pollution of pathogenic bacteria, viruses and parasites, how many categories are there?
Explanation: The three broad categories for control of pathogenic bacteria, viruses and parasites are, control at the initial source of the micro-organisms, control at the area of water use, and control of the product that is affected by contamination.
6. Redesign of synthetic detergents to reduce foaming can minimize water pollution in little quantity.
Explanation: Redesign of synthetic detergents to reduce foaming and downstream transport through increased biodegradation rate. This can control water pollution. Thus the chemicals released by detergents can also be reduced.
7. How are aquatic weeds used in controlling water pollution?
a) They use as a decorative substances
b) They use as biological filters
c) They use as chemicals
d) They used to upgrade wastewater treatment
Explanation: Aquatic weeds are used to upgrade wastewater treatment lagoons and treat chemical wastewaters. It can readily absorb, accumulate and concentrate heavy metals such as lead, mercury and cadmium.
8. What is the pH range of effluent after treatment?
a) Between 4.4 and 5.5
b) Between 4.8 and 6.1
c) Between 6.8 and 7.8
d) Between 7.8 and 8.3
Explanation: The pH of effluent after treatment has been found to be between 6.8 and 7.8, which is an ideal range of fresh water. As the metals are extracted from the effluents, it causes considerable cleaning of the effluent.
9. Why controlled use of water hyacinth is important in controlling of water pollution?
a) To decrease the BOD level
b) To increase the BOD level
c) To completely vanish the BOD level
d) To maintain the BOD level
Explanation: The controlled use of water hyacinth I conjunction with waste stabilization increases the BOD removal capacity of these systems. It also reduces the high total suspended solids normally associated with sewage lagoons.
10. When did water cess act come into force?
Explanation: Water cess act came into force in 1977. It is one of the important law which aims to reduce and prevent water pollution. Its effects have been limited in controlling water pollution. Strict implementation is necessary for effective prevention of water pollution.
11. Which of the following is not a way to minimize the disposal of toxic wastes into the water?
a) To create awareness about the pollution happening on water for people
b) To minimize the use of pesticides and chemicals into the agricultural fields
c) Recycle of plastic materials
d) Encouraging the disposals of electronic waste into the water bodies
Explanation: Out of the above four options encouraging the disposals of e-waste is not a way to minimize the disposal of toxic wastes into the water. The e-waste cause pollution to the water bodies so a proper treatment must be give before disposal.
12. Why the flowing water of the river cannot be cleaned easily by natural process?
a) Because a large number of external substances are discharged into the water
b) Because external climatic conditions are not favorable to clean the water
c) The following water is already cleaned before flowing itself
d) Because of lack of space to clean the water
Explanation: The flowing water of the river cannot be cleaned easily by a natural process since a large number of external substances are discharged into the water, the river water becomes polluted. These cause diseases to the people using river water.
13. Water that has been exposed to a substance other than water I called as_____________
a) Water purification
b) Water strength
c) Water contamination
d) Water desolation
Explanation: Water can be contaminated with natural elements and as well as from the materialistic things. All contaminated water is polluted, but all polluted water is contaminated with something. So a proper treatment for contaminated water can avoid the pollution of water.
14. Monitor used of motor oil can reduce water pollution.
Explanation: Many hazardous waste products that are used for cars, such as motor oil and gasoline are very dangerous. Motor oil contains potentially dangerous heavy metals such as lead and cadmium. So a proper monitor of this can avoid water pollution.
Sanfoundry Global Education & Learning Series – Energy & Environment Management.
To practice all areas of Environment Management for Quizzes, here is complete set of 1000+ Multiple Choice Questions and Answers.