Which one of the following is the basic indicator of river health?
What is the minimum amount of DO required for the life survival of aquatic animals?
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In the concept of self purification of natural streams, complete the following phrase. Solution to pollution is _________
_____ is accomplished by the replenishment of oxygen lost to bacterial degradation of organic waste.
On which of the following does the self purification process does not depend?
In a flowing stream, the breakdown of degradable wastes by bacteria ________ dissolved oxygen.
What is the objective of water quality management?
The impact of pollution depends upon nature of the pollutants and the ______
Self-purification of running streams may be due to:
14 videos|99 docs|98 tests
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14 videos|99 docs|98 tests
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