Q.

The anti-malarial drug quinine is made from a plant. The plant is

A. Neem
B. Eucalyptus
C. Cinnamon
D. Cinchona
Answer» D. Cinchona
Explanation: Quinine is an alkaloid, a naturally occurring chemical compound. How it works as a medicine is not entirely clear. Quinine was first isolated in 1820 from the bark of a cinchona tree.
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