JEE Main & Advanced Chemistry Organic Chemistry: Some Basic Principles & Techniques Question Bank Classification and nomenclature of organic compounds

  • question_answer The IUPAC name of  \[C{{H}_{3}}-\underset{OH\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,}{\mathop{CH-}}\,}}\,C{{H}_{2}}-\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,}{\mathop{\underset{OH}{\mathop{\underset{|\,\,\,\,\,}{\mathop{C-}}\,}}\,}}\,}}\,C{{H}_{3}}\] and \[\underset{CN\,\,\,\,\,\,\,CN\,\,\,\,\,\,CN\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}-CH-C{{H}_{2}}}}\,}}\,\] [Pb. CET 2004; DCE 2002; MNR 1984; CPMT 1983, 93; RPMT 1999]

    A) 1, 1-dimethyl-1, 3-butanediol and propanetricarbyl amine

    B) 4-methyl-2, 4-pentanediol and 1, 2, 3 propanetrinitrile

    C) 2-methyl 2, 4-pentanediol and 3 cyano 1, 5-pentanedinitrile

    D) 1, 3, 3-trimethyl 1,3-propanediol and 1, 2, 3 tricyano propane

    Correct Answer: C

    Solution :

    \[\underset{2\text{ methyl 2, 4-pentanediol}}{\mathop{\underset{5}{\mathop{C{{H}_{3}}}}\,-\underset{OH}{\mathop{\underset{|\,\,\,4\,\,}{\mathop{CH}}\,}}\,-\underset{3}{\mathop{C{{H}_{2}}}}\,-\underset{OH}{\mathop{\underset{2|\,\,\,\,\,\,\,\,}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|\,\,\,\,\,\,\,}{\mathop{C-}}\,}}\,}}\,}}\,\underset{1}{\mathop{C{{H}_{3}}}}\,}}\,\];     \[\underset{\text{1, 2, 3 tricyano propane}}{\mathop{\underset{CN}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,-\underset{CN}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{CH}}\,}}\,-\underset{CN}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,}}\,\]


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