MCQ
A solution of optically active $1$ -phenylethanol racemizes in acidified aqueous  medium. It is due to
  • A
    enolization
  • carbonium ion formation
  • C
    carbanion formation
  • D
    reversible oxidation-reduction

Answer

Correct option: B.
carbonium ion formation
b

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Acetylene molecule has carbon in
The basic character of the transition metal monoxides follows the order

(Atomic no. $Ti = 22, V = 23, Cr = 24, Fe = 26$)

Consider the following reactions in which all the reactants and products are in gaseous state

${\text{2PQ}} \rightleftharpoons {{\text{P}}_2}{\text{  +  }}{{\text{Q}}_2}\,;\,\,\,\,{{\text{K}}_1}{\text{ =  2}}{\text{.5 }} \times \,{\text{1}}{{\text{0}}^5}\,$

${\text{PQ + }}\frac{1}{2}{R_2} \rightleftharpoons PQR\,;\,\,\,\,{{\text{K}}_2}{\text{ =  5 }} \times \,{\text{1}}{{\text{0}}^{ - 3}}\,$

The value of equilibrium constant for reaction

$\frac{1}{2}{{\text{P}}_2}{\text{ + }}\frac{1}{2}{{\text{Q}}_2}{\text{ + }}\frac{1}{2}{R_2} \rightleftharpoons PQR\,$ is

Helium is added to the oxygen supply used by deep sea divers because
Which of the following molecules does not possess a permanent dipole moment
In a reaction, if half of the double bond is broken and two new bonds are formed, this is a case of
Which of the following compounds are antiaromatic
In a nucleotide the phosphate linkage is generally attached to -
Only $2 \mathrm{~mL}$ of $\mathrm{KMnO}_4$ solution of unknown molarity is required to reach the end point of a titration of $20 \mathrm{~mL}$ of oxalic acid ($2$ M) in acidic medium. The molarity of $\mathrm{KMnO}_4$ solution should be . . . . . . . . . $M$.
Read the following statements carefully

$(A)$ Albumin is a simple protein

$(B)$ The amino acid alanine contains an acidic side chain

$(C)$ Insulin is a hormone

$(D)$ Muscles contain the protein keratin

Point out the wrong statements in the above set of statements