Question

Q9. Which of the statements is/are incorrect?
I. Coal tar is a mixture of 400 organic compounds.
II. Naphthalene can be obtained from coal tar.
III. Coal tar is obtained by the refining of petroleum.

(a) Only I
(b) Only I and III
(c) Only II
(d) Only III

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Answer 1

Answer:

b)only I and III.coal tar is a mixture of 400 organic compounds,Naphthalene can be obtained from coal tar

Answer 2

option c) is the correct answer.

I) is incorrect.

because there are roughly about 200 substances present in coal tar.

III) is incorrect.

because coal tar is not obtained by the refining of petroleum. it is a by - product of coal.

hope the answer is correct.