Polymers & Everyday Chemistry · JEE Advanced previous year questions

2023 2 questions

1. Q412023 · 4 Jun 2023 · Paper 1

   In the given reaction scheme, $\mathbf{P}$ is a phenyl alkyl ether, $\mathbf{Q}$ is an aromatic compound; $\mathbf{R}$ and $\mathbf{S}$ are the major products. $$\mathbf{P}\stackrel{\mathrm{HI}}{\to }\mathbf{Q}\underset{(\mathrm{iii}){\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{\begin{array}{c}(\mathrm{i})\mathrm{NaOH}\\ (\mathrm{ii})\mathrm{C}{\mathrm{O}}_2\end{array}}{\to }}\mathbf{R}\underset{(\mathrm{ii}){\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{(\mathrm{i})(\mathrm{C}{\mathrm{H}}_3\mathrm{CO}{)}_2\mathrm{O}}{\to }}\mathbf{S}$$ The correct statement about $\mathbf{S}$ is

   1. A.It primarily inhibits noradrenaline degrading enzymes.
   2. B.It inhibits the synthesis of prostaglandin.
   3. C.It is a narcotic drug.
   4. D.It is $\text{ortho}$-acetylbenzoic acid.
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   Answer: B

2. Q412023 · 4 Jun 2023 · Paper 2· One or more correct
   
   1. A.$\mathbf{P}$ and $\mathbf{Q}$ are monomers of polymers dacron and glyptal, respectively.
   2. B.$\mathbf{P}$, $\mathbf{Q}$, and $\mathbf{R}$ are dicarboxylic acids.
   3. C.Compounds $\mathbf{Q}$ and $\mathbf{R}$ are the same.
   4. D.$\mathbf{R}$ does not undergo aldol condensation and $\mathbf{S}$ does not undergo Cannizzaro reaction.
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   Answer: C, D