UPSC Previous Year Question | Prelims GS | 2024

With reference to perfluoroalkyl and polyfluoroalkyl substances (PFAS), consider the following statements: 1. PFAS are found in drinking water, food and food-packaging materials. 2. PFAS are not easily degraded in the environment. 3. Persistent exposure to PFAS can lead to bioaccumulation in animals. Which of the statements given above are correct?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

Answer

Correct Answer

1, 2 and 3

Explanation

PFAS are a large group of synthetic chemicals used in various industrial and consumer applications. They have been detected in drinking water, food and food-contact materials. Many PFAS are highly persistent and resist environmental degradation. Certain PFAS can accumulate in organisms, including animals, following prolonged exposure. Therefore, all three statements are correct.

Topics: environment, environmental pollution, persistent chemicals, pfas and bioaccumulation