Which of the following are responsible for water pollution?
A. Chemical fertilisers
B. Pesticides
C. Herbicides
D. Advertising Media
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A, B and C only
A. Chemical fertilisers Correct. Modern farming uses inorganic fertilisers. They are washed down into rivers, lakes and tanks and also seep through the soil into groundwater; fertiliser raises the nitrate content of surface water.
B. Pesticides Correct. Pesticides used on crops reach water bodies in the same way, with the run-off from the fields.
C. Herbicides Correct. Herbicides, the chemicals used to kill weeds, are also pollution generating components that end up in water.
D. Advertising Media Incorrect. Advertising media appears in the list of sources of noise pollution, along with aircraft, automobiles and trains. It does not pollute water.
NCERT (2025-26): “Environmental Pollution Various types of chemicals used in modern agriculture such as inorganic fertilisers, pesticides and herbicides are also pollution generating components. These chemicals are washed down to rivers, lakes and tanks. These chemicals also infiltrate the soil to reach the ground water. Fertiliser induces an increase in the nitrate content of surface waters.…”
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