Which one of the following is used in preparing a natural mosquito repellent?

Which one of the following is used in preparing a natural mosquito repellent?
  1. Congress grass
  2. Elephant grass
  3. Lemongrass
  4. Nut grass

Solution

Lemongrass contains citronella oil, which is a well-known natural mosquito repellent.

Asked in: UPSC Prelims 2021

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