21.
Coal tar contains about
A
300 substance
B
400 substance
C
200 substance
D
100 substance
View Answer
Correct Answer: C — 200 substance
Explanation:
The correct answer is 200 substance.
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Coal tar contains about
300 substance
400 substance
200 substance
100 substance
Correct Answer: C — 200 substance
Explanation:
The correct answer is 200 substance.
Coal tar is used in manufacture of
Drugs
All of these
Explosives
Synthetic dyes
Correct Answer: B — All of these
Explanation:
The correct answer is All of these.
Coal tar has an unpleasant smell
None of these
Pleasant
Both (a) & (b)
Unpleasant
Correct Answer: D — Unpleasant
Explanation:
The correct answer is Unpleasant.
Coal is produced in industry to get
Coal tar
Coal gas
All of these
Coke
Correct Answer: C — All of these
Explanation:
The correct answer is All of these.