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:

  1. 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.



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