M K Verma Solutions for Chapter: Aldehydes, Ketones and Carboxylic Acids, Exercise 1: TOPICWISE QUESTIONS

The reaction of $\mathrm{R}-2-\mathrm{hydroxy} \mathrm{propanal}$ with $\mathrm{HCN}$ occurs in basic medium. Among the following statements, which ones are correct?

$\left(\mathrm{a}\right)$ The product formed is chiral and exist as a racemic mixture.

$\left(\mathrm{b}\right)$ Racemisation occurs at ${\mathrm{C}}_1$ of reactant as carbonyl group is a planar group.

$\text{(c) }$Product formed exists as diastereomers.

$\left(\mathrm{d}\right)$ Basic medium increase ionization of $\mathrm{HCN}$ and increases ${\mathrm{CN}}^{-}$ ,i.e., the nucleophile.
 

Ethanal forms '$\mathrm{x}$' total number of acetals (including stereoisomers) with glycerol. What is the value of '$\mathrm{x}$'?

In which one of the following, all the compounds will give positive Tollen's test?

Compound $\mathrm{A}$ (molecular formula ${\mathrm{C}}_3{\mathrm{H}}_8\mathrm{O}$) is served with acidified ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ to form  $\mathrm{B}$ (molecular formula  ${\mathrm{C}}_3{\mathrm{H}}_6\mathrm{O}$). $\mathrm{B}$ forms a shining silver mirror on warming with ammoniacal ${\mathrm{AgNO}}_3$. $\mathrm{B}$, when treated with an aqueous solution of ${\mathrm{NH}}_2{\mathrm{CONHNH}}_2$, gives a product $\mathrm{C}$. Identify the structure of $\mathrm{C}$.

What is the number of aldol reactions that occur in the given transformation?

What is the product $\left(\mathrm{A}\right)$ in the following reaction? 

What is the major product $\left(\mathrm{A}\right)$ in the following reaction?

${\mathrm{CH}}_3\mathrm{CH}=\mathrm{CHCHO}\stackrel{{\mathrm{OH}}^{-}}{\to }\stackrel{∆}{\to }\mathrm{A}\hspace{0.17em}\left(\mathrm{major}\right)$

What is the product $\left(\mathrm{P}\right)$ in the following reaction?