List of top Environmental Science Questions on Water pollution

Which of the following can directly cause eutrophication in lakes?
A. Sewage waste
B. Acidic precipitation
C. Agriculture runoff
D. Sulfur rich effluent from thermal power plant
E. Municipal waste water
Choose the correct answer from the options given below:

Choose the correct statement about water pollution?
A. Dissolved oxygen is inversely proportional to BOD in waste water.
B. Dissolved ion increases turbidity of water.
C. Turbidity is a measure of transparency of water.
D. Alkalinity is caused by carbonate, bicarbonate and hydroxides.
E. Alkalinity is base neutralising capacity of water.
Choose the correct answer from the options given below:

Discuss four indicators of water quality and give one significance of each of them.

Most of the agricultural runoff and chemical fertilizers used in farming end up in water bodies, which leads to eutrophication. The nutrients responsible for eutrophication are