River Pollution

Q. Eutrophication causes decrease in which of the following?

1. Dissolved salts
2. Dissolved hydrogen
3. Dissolved oxygen
4. Dissolved nitrogen

Q. Eutrophication is the increased growth of algae in water that results in reduced sunlight penetration and depletion of dissolved in water.

1. oxygen
2. nitrogen
3. argon
4. carbon dioxide

Q. The main objective of the National River Conservation Plan is to improve the quality of water in rivers.

1. True
2. False

Q. With the increased domestic usage, urbanisation, and industrialisation, our rivers are being polluted at an alarming rate. Identify the major sources of river pollution.

1. Animal waste from tanneries
2. River cleaning drives
3. Sewage waste
4. Industrial wastes

Q. PCBs stand for which of the following?

1. Polychloride biphenyls
2. Polychlorinated bisphenols
3. Polychlorinated biphenyls
4. Polychloride bisphenols

Q. The Ganga Action Plan was introduced in the year _______.

1. 1995
2. 1984
3. 1985
4. 1994

Q. What are the reasons for the pollution of rivers? How can it be prevented?

Q. PCBs stand for which of the following?

1. Polychloride biphenyls
2. Polychlorinated bisphenols
3. Polychloride bisphenols
4. Polychlorinated biphenyls

Q. Pollution in rivers like the Ganga is caused by which of the following factors?

1. Louder noise.
2. Dumping of industrial waste into rivers.
3. Releasing treated sewage into rivers.
4. Transportation.

Q. What causes eutrophication in water bodies?

1. Excess amount of oil spilling into the water body.
2. Excess amount of fertilisers getting drained into water.
3. Change in the pH level of water.
4. Decreased level of oxygen.