1
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

A Nitrogen containing organic compound with molecular formula $\mathrm{C}_3 \mathrm{H}_5 \mathrm{~N}$ undergoes the following reactions.

$$ \begin{aligned} & \mathrm{C}_3 \mathrm{H}_5 \mathrm{~N}+\mathrm{Na} / \mathrm{Hg} \text { in } \mathrm{C}_2 \mathrm{H}_5 \mathrm{OH} \rightarrow[\mathrm{~A}] \\ & {[\mathrm{A}]+\mathrm{CH}_3 \mathrm{COCl} / \mathrm{NaOH}(\mathrm{aq}) \rightarrow[\mathrm{B}]} \\ & {[\mathrm{A}]+\mathrm{CHCl}_3 / \mathrm{KOH} \text { on heating } \rightarrow[\mathrm{C}] \text { (foul smelling compound) }} \end{aligned} $$

Identify compounds $[\mathrm{B}]$ and $[\mathrm{C}]$

A

[B]: $\left(\mathrm{CH}_3\right)_3-\mathrm{C}-\mathrm{NH}-\mathrm{COCl}$              [C]: $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CN}$

     

B

$[\mathrm{B}]: \mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NH}-\mathrm{COCH}_2-\mathrm{CH}_3$             [C]: $\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_2-\mathrm{CN}$

C

$[\mathrm{B}]: \mathrm{CH}_3-\left(\mathrm{CH}_2\right)_2-\mathrm{NH}-\mathrm{COCH}_3$       [C]: $\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_2-\mathrm{NC}$

D

$[\mathrm{B}]:\left(\mathrm{CH}_3\right)_2-\mathrm{CH}-\mathrm{NH}-\mathrm{COCH}_3$        [C]: $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NC}$

2
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Choose the incorrect statement.

A

Propan-2-amine can be obtained by reacting acetoxime with $\mathrm{Na} / \mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$

B

Aniline cannot be prepared by Phthalimide reaction

C

The decreasing order of basic strength of amines in aqueous solution is Ethanamine > $\mathrm{N}, \mathrm{N}$-Dimethylaniline > Benzenamine

D

Fluorobenzene cannot be prepared from Benzenediazonium chloride by Sandmeyer's reaction because Fluorination of the Diazonium salt is highly endothermic in nature

3
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Identify the final product formed when benzenamine reacts with the given reagents in the sequential order as:

i. $\quad\left(\mathrm{CH}_3-\mathrm{CO}\right)_2 \mathrm{O} /$ Pyridine.

ii.      Conc. $\mathrm{HNO}_3+\mathrm{H}_2 \mathrm{SO}_4$ \& then reacted with $\mathrm{H}_3 \mathrm{O}^{+}$

iii. $\quad \mathrm{NaNO}_2 \mathrm{HCl}(273 \mathrm{~K})$ \& then reacted with $\mathrm{H}_3 \mathrm{PO}_2(\mathrm{aq})$.

A

2- Chloro- 4-Nitrophenol

B

4-Chloro-2-Nitroaniline

C

Nitrobenzene

D

4-Nitrophenol

4
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { Identify the correct order of the type of reactions taking place in this sequence: } $$

COMEDK 2026 Morning Shift Chemistry - Compounds Containing Nitrogen Question 4 English
A

Reduction, Diazotization, Coupling

B

Oxidation, Coupling, Diazotization

C

Reduction, Diazotization, Addition

D

Reduction, Coupling, Diazotization

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