Water Pollution
Category : 5th Class
Water is an essential component of all forms of life. It is odorless, colorless and transparent liquid. It has the capacity to dissolve maximum substances in it and hence is used as a universal solvent. But now a days due to human activities, over population, industrialization and unawareness, the smell, odur and unique quality of water is being contaminated, which is called water pollution.
Consequences of Water pollution
Eutrophic lake - a threat to aquatic life Water contamination leads to untimely death of aquatic lives
Polluted water causes disease
Water borne diseases can spread through contaminated water. Contaminated water contains pathogenic microorganisms.
How to minimize water pollution
Look at the following chart to understand the method by which we can minimize water pollution:
Bathing animals in water sources should be stopped
Bury dead leaves
Which one of the following is a factor of water pollution?
(a) Factory's wastes
(b) Pesticides, insecticides, weedicides
(c) Untreated sewage
(d) All of these
(e) None of these
Answer: (d)
Explanation
Factory's wastes. Pesticides, insecticides, weedicides and untreated sewage all are the factors of water pollution. Therefore, option (d) is correct and rest of the options is incorrect.
What may be the consequences of water pollution?
(a) Killing of aquatic animals
(b) Disturbance in the ecological balance
(c) Disturbance in the food chain
(d) All of these
(e) None of these
Answer: (d)
Explanation
All are the possible consequences of water pollution that have been given in the option A, B, and C. Therefore, option (d) is correct and rest of the options is incorrect..
You need to login to perform this action.
You will be redirected in
3 sec