List of top Chemistry Questions on Water pollution

Which of the following industries generate non-biodegradable wastes?

1) Cotton mills
(2) Paper mills
(3) Thermal power plants
(4) Textile factories

Methemoglobinemia is due to:

The IUPAC name of the following compound is: 

Among the following, the method used for removal of temporary hardness of water is
The water quality of a pond was analysed and its BOD was found to be 4. The pond has
Which of the following diseases is not caused by water pollution?
The eutrophication of water body results in:
Given below are two statements :
Statement I: In polluted water values of both dissolved oxygen and BOD are very low.
Statement II: Eutrophication results in decrease in the amount of dissolved oxygen.
In the light of the above statements, choose the most appropriate answer from the options given below :
The concentration of dissolved oxygen $(DO)$ in cold water can go upto :
Which is used for sterilization of water in water supply system of cities?
Methemoglobinemia is caused due to the presence of in excess of which of the following in drinking water?
The highest DDT concentration in aquatic food chain shall occur in
The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be $1000 \,ppb$, $40\, ppb$, $100\, ppm$ and $0.2\, ppm$, respectively. This water is unsuitable for drinking due to high concentration of :
The domestic sewage in large cities
The term biomagnification refers to
Measuring Biochemical Oxygen Demand (BOD) is a method used for
Eutrophication causes reduction in
Phosphate pollution is caused by:
The abbreviation BOD stands for
The Minamata disease in Japan was caused through the pollution of water by
The most common indicator organism that represents polluted water is
Spraying of DDT produces pollution of
Most abundant water pollutant is