EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2017>Q 7

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A compound is soluble in concentrated $H_{2} {SO}_{4}$ . It does not decolourise bromine in carbon tetrachloride but is oxidised by chromic anhydride in aqueous sulphuric acid within two seconds, turning orange solution to blue, green and then, opaque. The original compound is

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Important Questions on Alcohols, Phenols and Ethers

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2017>Q 8

What is

D

in the following sequence of reactions?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2019 Shift 1>Q 9

Ethylene glycol, on oxidation with per-iodic acid, gives

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2019 Shift 1>Q 10

In the reaction,

C_{6} H_{5} OH \overset{NaOH}{⟶} (A)

\frac{{CO}_{2}}{140 ° C, (4 - 7) atm} (B) \overset{HCl}{⟶} (C),

the compound

(C)

is:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2018 Shift 1>Q 11

The

p -

cresol reacts with chloroform in alkaline medium to give the compound

A

, which adds hydrogen cyanide to form the compound

B

. The latter, on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2017>Q 13

What is $Z$ in the following sequence of reactions?
$Phenol \overset{Zn dust}{\to} X \overset{{CH}_{3} Cl / Anhydrous {AlCl}_{3}}{\to} Y \overset{Alkaline {KMnO}_{4}}{\to} Z$

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2017>Q 14

p

-cresol reacts with chloroform in an alkaline medium to give compound

A

, which adds hydrogen cyanide to form compound

B

. The latter on acidic hydrolysis gives chiral carboxylic acid. What is the structure of carboxylic acid?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2019 Shift 1>Q 15

When acetylene is passed into methanol at

160 - 200 ° C,

in the presence of a small amount of potassium methoxide under pressure, the following is formed:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 12 - Alcohols, Phenols and Ethers>VITEEE 2018 Shift 1>Q 16

In Williamson synthesis, if a tertiary alkyl halide is used, then