Multiple choice

Which among the following was first isolated from coal tar?

  1. Acridine

  2. Nitro compounds

  3. Ethyl green

  4. Aluminon
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A Correct answer
Explanation

Acridine is structurally related to anthracene with one of the central CH groups is replaced by nitrogen. Acridine, a colourless solid, was first isolated from coal tar. It is a raw material used for the production of dyes and some valuable drugs.

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