Brominated flame retardants are used in many household products like mattresses and upholstery. Why is there some concern about their use? 1. They are highly resistant to degradation in the environment. 2. They are able to accumulate in humans and animals. Select the correct answer using the code given below.
- (a) 1 only
- (b) 2 only
- (c) Both 1 and 2 ✓ UPSC's answer
- (d) Neither 1 nor 2
Why the answer is (c)
• Brominated flame retardants (PBDEs, HBCD) are persistent organic pollutants: they resist degradation and persist in soil, water and dust for years (statement 1).
• Being fat-soluble, they bioaccumulate in animals and humans, appearing in breast milk and blood, and are linked to thyroid and neurodevelopmental harm (statement 2).
• Several are listed under the Stockholm Convention.
• Hence both 1 and 2, option (c).
Why the other options are wrong
- (a) 1 only
- Statement 2 is also correct: they bioaccumulate.
- (b) 2 only
- Statement 1 is also correct: they are persistent.
- (d) Neither 1 nor 2
- Both statements are correct.
Asked in the GS Paper I of the UPSC Civil Services Preliminary Examination 2014, held on 24 August 2014. Question and answer key: Union Public Service Commission. Explanation: UPSC Answer Check.