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UPSC 2021: Which one of the following is used in preparing a natural mosquito repellent?
(a)Congress grass
(b)Elephant grass
(c)Lemongrass
(d)Nut grass
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Not attemptedCorrect Answer: (c) Lemongrass
Lemongrass (Cymbopogon citratus) contains the essential oil citronella, a well-known natural mosquito repellent used in candles, sprays and creams. Congress grass (Parthenium), elephant grass and nut grass are not used for this purpose. ([dalvoy.com](https://www.dalvoy.com/upsc/previous-years/2021/upsc-prelims-2021-natural-mosquito-repellent-plant-lemongrass?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2021 Environment & Ecology question?▼
The correct answer is option (c): Lemongrass. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Sustainable Agriculture & Forestry question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2021, GS Paper 1, as Question 21. It falls under Environment & Ecology > Sustainable Agriculture & Forestry.
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 Sustainable Agriculture & Forestry?▼
UPSC has asked 31 questions from Sustainable Agriculture & Forestry (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.