Question
List main sources of water pollution.
✓
Answer
Main sources of water pollution are:
- Waste from farms i.e. fertilizers and pesticides. The chemicals in them pollute the water.
- Industries release their waste products directly into the rivers thus degrading water quality. Industries also contribute to thermal pollution as the coolants discharged by them causes a change in the average temperature of water, thereby degrading the water quality.
- Disease causing agents like bacteria, viruses and protozoans enter the sewage system. This sewage is ultimately discharged into water bodies like sea.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Water as ice has a cooling effect, whereas water as steam may cause severe burns. Explain these observations.
What is phenomenon through which certain pollutants get accumulated in tissues in increasing concentration along the food chain, called?
Write four general characters of Thallophyta.
Given below is the velocity-time graph for the motion of the car. What does the nature of the graph show? Also, find the acceleration of the car.
Explain various methods of weed control.
Calculate the mass of sodium sulphate required to prepare its $20\%$ (mass percent) solution in $100\ g$ of water?
→To make a saturated solution, $36\ g$ of sodium chloride is dissolved in $100\ g$ of water at $293\ K$. Find its concentration at this temperature.
→When is the pressure on the ground more-when a man is walking or when a man is standing? Explain.
Is the acceleration due to gravity of earth $‘g’$ a constant? Discuss.
→A cyclist is travelling at $15\ ms^{-1}.$ She applies brakes so that she does not collide with a wall $18\ m$ away. What deceleration must she have$?$
→