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Coal tar is a mixture of about how many substances?

A400
B600
C800
D200
Answer & Solution
Correct answer: D. 200
1. It is a black thick liquid with an unpleasant smell. 2. About 200 substances make it up. 3. Dyes, drugs and explosives come from it. _Source: syllabus Science, Chapter 5, Coal and Petroleum._
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