Q. Consider the following statements:
1.A higher Bio-Chemical Oxygen Demand (BOD) signifies better water quality.
2.Maharashtra has accounted for the highest number of polluted rivers stretches in the country.
3.Polluted rivers can have a major impact on the aquatic life, flora and fauna in the rivers..
Which of the statements given above is/are correct?

[A] 1 and 2 only

[B] 3 only

[C] 2 and 3 only

[D] 1, 2 and 3

Answer: C
Notes:

Explanation –

Statement 1 is incorrect. Higher BOD indicates requirement of more oxygen and signifies lower water quality.

Statement 2 and 3 are correct. As per Central Pollution Control Board (CPCB) 2022 report, Maharashtra has accounted for the highest number of polluted river stretches in the country. Polluted rivers can have a major impact on the aquatic life, flora and fauna in the rivers.

Source: The Times of India