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UPSC 2010: A pesticide which is a chlorinated hydrocarbon is sprayed on a food crop. The food chain is: Food crop – Rat – Snake – Hawk. In this food chain, the highest concentration of the pesticide would accumulate in which one of the following?
(a)Food crop
(b)Rat
(c)Snake
(d)Hawk
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Not attemptedCorrect Answer: (d) Hawk
Chlorinated hydrocarbons such as DDT are persistent and fat-soluble; their concentration rises at each trophic level (biomagnification). In the chain food-crop → rat → snake → hawk, the hawk is the top predator and therefore accumulates the highest residue. ([gktoday.in](https://www.gktoday.in/analysis-of-upsc-civil-services-2010-gs-paper-part-ii/))
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Frequently Asked Questions
What is the correct answer to this UPSC 2010 Environment & Ecology question?▼
The correct answer is option (d): Hawk. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Pollution & Waste Management question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2010, GS Paper 1, as Question 23. It falls under Environment & Ecology > Pollution & Waste Management.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Pollution & Waste Management?▼
UPSC has asked 38 questions from Pollution & Waste Management (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.