In the Cannizzaro's reaction given below,

$2\mathrm{Ph}-\mathrm{CHO}\stackrel{{\mathrm{OH}}^{-}}{\to }\mathrm{Ph}-{\mathrm{CH}}_2\mathrm{OH} + {\mathrm{PhCOO}}^{-}$

the slowest step is:

1. The attack of OH^- at the carbonyl group

2. The transfer of hydride to the carbonyl group

3. The abstraction of proton from the carboxylic acid

4. the deprotonation of Ph-CH₂OH

The aldol condensation of acetaldehyde results in hte formation of:

1. $$\begin{gathered} {\mathrm{CH}}_3 \mathrm{C} {\mathrm{CHCH}}_3 \\ \left|\right| | \\ \mathrm{O} \mathrm{OH} \end{gathered}$$

2. $$\begin{gathered} {\mathrm{CH}}_3 {\mathrm{CHCH}}_2 \mathrm{CH} \\ | || \\ \mathrm{OH} \mathrm{O} \end{gathered}$$

3. $$\begin{gathered} {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}—\mathrm{CH} \\ | || \\ \mathrm{OH} \mathrm{O} \end{gathered}$$

4. ${\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}+\mathrm{COOH}$

Wolff-Kishner's reaction is:

1. reduction of carbonyl compound into hydrocarbons

2. reduction of carbonyl compound into alcohols

3. reduction of nitrobenzene into aniline

4. reduction of carbohydrates to alcohol

The correct order of reactivity of PhMgBr with,

$O O O$
$\left|\right| \left|\right| \left|\right|$
$PH—C—PH C{H}_3—C—H C{H}_3—C—C{H}_3 is:$
$\left(l\right) \left(ll\right) \left(lll\right)$

(1) I>II>III

(2) III>II>I

(3) II>III>I

(4) II>I>III

The IUPAC name of the ${\mathrm{CH}}_3\mathrm{COCH}({\mathrm{CH}}_3{)}_2$ is:

(1) 4-methyl isopropyl ketone

(2) 3-methyl-2-butanone

(3) isopropylmethyl ketone

(4) 2-methyl-3-butanone

In the folllowing sequence products I, J and L are formed and K represents a regent.

(i) The structure of the product I is:

(ii) The structures of compounds J & K respectively are:

(iii) The structure of product L is:

A tertiary alcohol H upon acid catalysed dehydration gives a product I. Ozonolysis of I leads to compounds J & K. Compound J upon reaction with KOH gives benzyl alcohol and a compound L, whereas K on reaction with KOH gives only M.

(i) Compound H is formed by the reaction of: 

Vanillin, used as a flavouring agent, is:
1. An Aliphatic alcohol
2. An Aromatic aldehyde
3. A Hydrocarbon
4. A Carbohydrate

Acetophenone on oxidation by perbenzoic acid gives phenyl acetate. The reaction is named as:

1. Baeyer-Villiger oxidation

2. Perkin's reaction

3. Claisen condensation

4. Reformatsky reaction

In Etard's reaction, toluene is oxidised to benzaldehyde using:

(1) H₂O₂

(2) Cl₂

(3) chromium trioxide or CrO₂Cl₂

(4) KMnO₄