Test: Preparation and Properties of Alcohols - JEE MCQ

(i)
(ii)
(iii)
(iv)

RO^- has more electron density.

Ethers are reduced by red and HI to alkanes through alkyl iodides

I.
II.
III.
IV.

-Nitrophenol has intramolecular H-bonding.

Carboxylic acids can be converted to alcohols using Lithium aluminum hydride An aldehyde is produced as an intermediate during this reaction, but it cannot be isolated because it is more reactive than the original carboxylic acid.

Ethyl magnesium bromide is Grignard reagent
which reacts with acetone to give an al de hyde.

The obtained product on hydrolysis gives 2-methyl butan-2-ol an alcohol.

Higher the electronegativity between C-X, higher will be the dipole moment.

Vander Waal forces are responsible for boiling point.

The above mechanism of ester hydrolysis is known as alkyl-oxygen cleavage (unimolecular).

and

Ketones are converted to alcohols by using Grignard reagent followed by hydrolysis. So, the reagent in the reaction will be

The commercial alcohol is made unfit for drinking by mixing in it some copper sulphate (to give it colour) and pyridine (a foul smelling liquid). It is known as denaturation of alcohol.

Ethyl alcohol reacts with methyl magnesium iodide as follows