NCERT Solutions Curiosity Chapter 9 Our scientific heritage — Be a scientist

Book page 138 Updated on2026-09-05

Q1.
What inspired Asima Chatterjee to work on medicinal plants?
Answer

India's own long tradition of plant-based medicine. Ayurveda, Siddha and the other Indian systems had used herbs to treat disease for centuries, and Asima Chatterjee set out to find which chemical compound in each plant actually does the healing — turning traditional knowledge into tested chemistry.

Her method is the chemistry of this chapter used as a tool. To pull a useful compound out of a plant you dissolve the crushed herb in a chosen solvent — water, alcohol, or a hydro-alcoholic mixture — so that the compound you want passes into the solution while much of the rest of the plant does not. Choosing the right solvent, and then separating and purifying what dissolved, is how she isolated compounds and developed anti-epileptic and anti-malarial drugs.

AchievementWhat it was
Doctorate of ScienceThe second Indian woman to earn it, after Janaki Ammal
Shanti Swarup Bhatnagar AwardFirst woman to receive it in the field of chemical science
Padma BhushanHonoured by the nation for her contribution to science
Why the solvent matters: A compound dissolves only in a solvent whose particles attract it. Using water alone leaves behind compounds that water cannot dissolve; adding alcohol picks up a different set. By choosing the solvent, a chemist chooses what comes out of the plant.
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