Q. The main active constituent of tea and coffee is
Solution:
Caffeine is a stimulant obtained from over 60 different types of plants worldwide. The scientific name for caffeine is 1,3,7-trimethylxanthine. Caffeine is considered to be the most commonly used psychoactive drug in the world. Coffee, soda, and tea are the most common sources of caffeine in the diet.
Nicotine- a toxic colourless or yellowish oily liquid which is the chief active constituent of tobacco.
Aspirin- a tablet of any mild painkilling drug.
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