UPSC CSE Prelims

Environmental Pollution question bank (Environment & Ecology)

Practice 24 free UPSC CSE Prelims Environment & Ecology - Environmental Pollution questions with answers and step-by-step solutions.

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Q1.

Consider the following pollutants: 1. Ground-level ozone 2. Nitrogen dioxide 3. Carbon monoxide 4. Lead. Which of the above are among the criteria pollutants monitored under India's National Air Quality Index (AQI)?

Topic: Air and Water Pollution | Source: AI Generated (UPSC CSE Prelims) | Status: pending review

(A)

1 and 2 only

(B)

1, 3 and 4 only

(C)

2, 3 and 4 only

(D)

1, 2, 3 and 4

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Q2.

What is the primary cause of 'Eutrophication' in freshwater water bodies?

Topic: Air and Water Pollution | Source: AI Generated (UPSC CSE Prelims) | Status: pending review

(A)

Accumulation of heavy metals such as mercury and lead from industrial effluent.

(B)

Nutrient enrichment, particularly nitrogen and phosphorus, from agricultural runoff and sewage.

(C)

Acid rain lowering the pH of the water body and killing aquatic flora.

(D)

Thermal pollution reducing the dissolved oxygen capacity of water.

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