Aldehyde And Ketone - Organic Chemistry - Chemistry Previous Year Questions

Identify the set, in which $X$ and $Y$ are correctly matched

$$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH} \xrightarrow[443 \mathrm{~K}]{\text { Conc. } \mathrm{H}_2 \mathrm{SO}_4} X \xrightarrow[\text { (ii) } \mathrm{Zn} / \mathrm{H}_2 \mathrm{O}\,(2 Moless)]{\text { (i) } \mathrm{O}_3} Y \xrightarrow[\text { (i) } \mathrm{H}^{+}]{\text {(i) Conc. } \mathrm{NaOH}} \mathrm{Z}$$

$Z$ is a mixture of alcohol and acid. Reaction of conversion of $Y$ to $Z$ is

What is ' $C$ ' in the following reaction sequence?

Identify the end product $(Z)$ in the sequence of the following reactions.

What is ' $Z$ ' in the given sequence of reactions?

The functional groups present in the product ' $X$ ' of the reaction given below are

Assertion (A) : Aldehydes are more reactive than ketones towards nucleophilic addition reactions

Reason (R) : In aldehydes, carbonyl carbon is less electrophilic compared to ketones.

The correct answer is

What is the major product $Z$ in the given reaction sequence?

$$\left(\mathrm{CH}_3\right)_2 \mathrm{C}=\mathrm{O} \xrightarrow[\text { (ii) } 2 \mathrm{H}_2 \mathrm{O}^{+}]{(\mathrm{i}) \mathrm{C}_2 \mathrm{H}_5 \mathrm{MgBr}} \xrightarrow[\Delta]{\substack{\text { (i) } \mathrm{OOCl}_2 \\ \text { (ii) } \mathrm{CH}_3 \mathrm{ONa}}} Y \xrightarrow[\text { Peroxide }]{\mathrm{HBr}} Z$$

$$\text { Toluene } \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CrO}_2 \mathrm{Cl}_2 / \mathrm{CS}_2} X \xrightarrow{\text { Conc. } \mathrm{NaOH}} Y+Z$$

The correct statements about $Y$ and $Z$ are

A. $Y$ is a secondary alcohol.

B. $Y$ is the reduction product of $X$.

C. $Z$ on heating with sodalime gives benzene.

D. $Y$ does not give $\mathrm{H}_2$ gas with Na metal.

$$\text { Identify the product ' } P \text { ' in the given reaction sequence. }$$

Consider the following reaction sequence. $(A)$ and $(C)$ are

Which of the following reactions is an example of Clemmensen reduction?

Identify the compounds $A$ and $B$ involved in the formation of given aldol

The products $C$ and $D$ are

Toluene on reaction with reagent $A$ gives $X$. This $(X)$ forms 2, 4 dinitrophenylhydrazone and reduces ammoniacal silver nitrate solution. Reaction of toluene with another reagent $B$ forms $Y$, which dissolves in $\mathrm{NaHCO}_3$ with evolution of $\mathrm{CO}_2$. What are $A$ and $B$ respectively?

$$\text { Observe the following set of reactions }$$

$$\text { What are } X, Y \text { and } Z \text { respectively }$$

The reaction of benzene with CO and HCl in the presence of anhydrous $\mathrm{AlCl}_3$ gives a compound $X \cdot X$ can also be obtained from which of the following reaction?