Hydrocarbons - Result Question 31
####14. Which of the following compounds does not dissolve in conc. $H _2 SO _4$ even on warming?
$(1983,1 M)$
(a) Ethylene
(b) Benzene
(c) Hexane
(d) Aniline
Topic 2 Unsaturated Hydrocarbons
Objective Questions I (Only one correct option)
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Answer:
Correct Answer: 14. (b)
Solution:
- Ethylene absorb $H _2 SO _4$ forming $CH _3-CH _2 OSO _3 H$ and dissolve. Benzene, with warm $H _2 SO _4$, undergo sulphonation and dissolve.
Aniline, with $H _2 SO _4$, forms anilinium sulphate salt and dissolve. Hexane, a hydrophobic molecule, does not react with $H _2 SO _4$, remains insoluble.
