JEE Main Chemistry question

Consider the reaction, Product. Among the following, which one cannot be formed as a product under any conditions? **[AIEEE 2011]**

(A)Ethyl hydrogen sulphate
(B)Ethylene
(C)AcetyleneCorrect
(D)Diethyl ether

Answer: (C)

Solution

Ethanol with conc. first gives ethyl hydrogen sulphate at room temperature; at ~140°C this reacts with excess ethanol to give diethyl ether, and at ~170°C it eliminates to give ethylene. Acetylene ($C

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Question ID VK-148422