Minimalist IAS
Prelims 2021 paper

UPSC CSE Prelims 2021 · GS Paper I · Question 75 · Pollution & waste

निम्नलिखित में से किसमें ‘ट्राइक्लोसन’ के विद्यमान होने की सर्वाधिक संभावना है, जिसके लंबे समय तक…

UPSC Civil Services (Preliminary) Examination 2021, General Studies Paper I, Question 75 — Pollution & waste.

Prelims 2021 · Q75

Pollution & waste X-Ray · Core #60 Easy

निम्नलिखित में से किसमें ‘ट्राइक्लोसन’ के विद्यमान होने की सर्वाधिक संभावना है, जिसके लंबे समय तक उच्च स्तर के प्रभावन में रहने को हानिकारक माना जाता है?

Read this question in English

‘Triclosan’, considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

(a) Food preservatives · (b) Fruit-ripening substances · (c) Reused plastic containers · (d) Toiletries

उत्तर और व्याख्या · explanation in English

Answer: (d) प्रसाधन सामग्री

Triclosan is an antibacterial chemical added to personal-care products such as some soaps, skin cleansers, deodorants and toothpastes, which are toiletries. It is a suspected endocrine (hormone-system) disruptor, so long exposure to high levels is a worry.

  • ✓ (d) The US FDA says triclosan is added to some antibacterial soaps and body washes, toothpastes and cosmetics, all toiletries. Some short-term animal studies link high doses to lower levels of some thyroid hormones, which is why long exposure is a concern.
  • ✗ (a) Food preservatives keep food from spoiling; triclosan is not a permitted food preservative. It is an antibacterial for personal-care products.
  • ✗ (b) Fruit-ripening substances are chemicals that release ethylene, the ripening hormone of plants. Triclosan is not a ripening agent.
  • ✗ (c) Triclosan is mainly an antibacterial added to personal-care products. The usual worry about reused plastic containers is a different one: chemicals such as BPA leaching out of the plastic.

Remember · Triclosan is an antibacterial agent in toiletries (soaps, toothpaste, deodorants) and a suspected endocrine disruptor.

Sources

Question and answer: UPSC's official GS Paper I (2021, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 1 Oct 2026 (how we verify). ·

Cite this question: UPSC CSE Prelims 2021, Q75 — minimalistias.com/pyqs/prelims/2021/q75

In the UPSC syllabus: Pollution & waste › Solid, plastic & e-waste See it and tick it covered →

Timed · 30 minutes Take Environment & ecology · Set 3 as a test This question is in it — with UPSC's marking and an instant score. Start the set Or the whole 2021 paper →

More on Pollution & waste

All Pollution & waste questions →

Same topic in the Mains syllabus