Q. Which of the following is/are considered as point sources of water pollution?
1. Factories
2. Sewage treatment plants
3. Oil tankers
4. Acid deposition
5. Livestock feedlots
Select the correct answer using the codes given below:

[A] 1, 2 and 3 only

[B] 2, 3 and 5

[C] 4 and 5

[D] 2, 4 and 5 only

Answer: A

Explanation: Point and non-point sources of water pollution. Point sources are pollutants that are discharged at specific locations through pipes, ditches or sewers into bodies of surface waters. Ex: Factories, sewage treatment plants, abandoned underground mines and oil tankers.

Non point sources these pollutants cannot be traced to a single point of discharge. They are large land areas or air-sheds that pollute water by runoff, subsurface flow or deposition from the atmosphere. Ex: Acid deposition, runoff of chemicals into surface water from croplands, livestock feedlots, logged forests, urban streets, lawns, golf courses and parking lots.

Source: https://www.britannica.com/topic/point-source-pollutant