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Q21·GS Paper 1 · Prelims 2021

Botanical Source of Natural Mosquito Repellents

S&TBiology & Life SciencesFactual singleEasyStatic

Question

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

Options

a

Congress grass

b

Elephant grass

c

Lemongrass

Answer
d

Nut grass

Explanation

Lemongrass (Cymbopogon species) contains high concentrations of volatile essential oils, predominantly citronellal and geraniol. These extracts possess well-documented insecticidal and repellent attributes and are widely utilized globally to manufacture natural mosquito-repellent sprays, lotions, and vaporizing coils. > Citronella extract derived from lemongrass acts as a popular, bio-friendly insect repellent. Answer: (c).

Question details

Year

2021

Paper

GS Paper 1

Question

Q21

Subject

Science & Technology

Sub-topic

Biology & Life Sciences

Type

Factual single

Difficulty

Easy

Nature

Static

Source hint

Daily scientific facts / Commercial use cases

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