Hydrocarbons - Result Question 50

####34. When propyne is treated with aqueous $H _2 SO _4$ in the presence of $HgSO _4$, the major product is

$(1983,1 M)$

(a) propanal

(b) propyl hydrogen sulphate

(c) acetone

(d) propanol

$(1983,1 M)$

(a) only $s p$-hybridised carbon atoms

(b) only $s p^{2}$-hybridised carbon atoms

(c) both $s p$ and $s p^{2}$-hybridised carbon atoms

(d) $s p, s p^{2}$ and $s p^{3}$-hybridised carbon atoms

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Answer:

Correct Answer: 34. $(a, b, d)$

Solution:

  1. Alkynes undergo Markownikoff’s addition of water in the presence of $H _2 SO _4 / HgSO _4$ :



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