✓ Board-verified
Chemistry · 2022 · 3 marks
CBSE 2022 · Region 5 · Set 1 · Q10
A compound 'A' on reduction with iron scrap and hydrochloric acid gives compound 'B' with molecular formula C_6 H_7 N. Compound 'B' on reaction with…
A compound 'A' on reduction with iron scrap and hydrochloric acid gives compound 'B' with molecular formula $\displaystyle \mathrm{C}_{6} \mathrm{H}_{7} \mathrm{~N}$. Compound 'B' on reaction with $\displaystyle \mathrm{CHCl}_{3}$ and alcoholic KOH produces an obnoxious smell of carbylamine due to the formation of 'C'. Identify 'A', 'B' and 'C' and write the chemical reactions involved.
Marking-scheme solution
\(\displaystyle A=\) / Nitrobenzene, \(\displaystyle B=\) / Aniline, \(\displaystyle C=\) / Phenylisocyanide $\displaystyle \xrightarrow{\mathrm{Fe/HCl}}$ $\displaystyle \xrightarrow[\mathrm{KOH~(alc.)}]{\mathrm{CHCl}_3}$
More from Amines
- Assertion: Acetanilide ( -NHCOCH_3 ) is less basic than aniline. Reason (R): Acetylation of aniline results in decrease of electron density on…2024 · asked 2×
- Among the following, which is the strongest base?2023 · asked 2×
- Which of the following is least basic?2023
- Assertion: Aliphatic primary amines can be prepared by Gabriel phthalimide synthesis. Reason (R): Alkyl halides undergo nucleophilic substitution…2024
- How will you obtain the following from benzene diazonium chloride? Write chemical equations involved: 3 []2026
- Assertion: Aniline is a stronger base than ammonia. Reason (R): The unshared electron pair on nitrogen atom in aniline becomes less available for…2024
- Identify the primary amine from the given options:2024
- Which of the following molecules is chiral in nature?2025
CBSE Class 12 Chemistry past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.