BCECE Engineering BCECE Engineering Solved Paper-2014

  • question_answer
        \[\text{C}{{\text{H}}_{\ }}_{\text{3}}\text{C}{{\text{H}}_{\text{2}}}\text{Br}\xrightarrow[\text{ }\!\!\Delta\!\!\text{ }]{\text{aq}\text{.KOH}}\text{A}\xrightarrow[\text{ }\!\!\Delta\!\!\text{ }]{\text{KMn}{{\text{O}}_{\text{4}}}\text{/}{{\text{H}}^{\text{+}}}}\] \[\text{B}\xrightarrow[\text{ }\!\!\Delta\!\!\text{ }]{\text{N}{{\text{H}}_{\text{3}}}}\text{C}\xrightarrow[\text{alkali}]{\text{B}{{\text{r}}_{\text{2}}}}\text{D, }\!\!'\!\!\text{ D }\!\!'\!\!\text{ }\]is

    A) \[\text{C}{{\text{H}}_{\text{3}}}\text{Br}\]                        

    B) \[\text{C}{{\text{H}}_{\text{3}}}\text{CON}{{\text{H}}_{\text{2}}}\]

    C) \[\text{C}{{\text{H}}_{\text{3}}}\text{N}{{\text{H}}_{\text{2}}}\]                            

    D) \[CHB{{r}_{3}}\]

    Correct Answer: C

    Solution :

    \[C{{H}_{3}}C{{H}_{2}}Br\xrightarrow[\Delta ]{aq.KOH}\underset{(A)}{\mathop{C{{H}_{3}}C{{H}_{2}}OH}}\,\xrightarrow[\Delta ]{KMn{{O}_{4}}/{{H}^{+}}}\]\[\underset{\text{(B)}}{\mathop{\underset{\text{acetic acid}}{\mathop{\text{C}{{\text{H}}_{\text{3}}}\text{COOH}}}\,}}\,\xrightarrow{\text{N}{{\text{H}}_{\text{3}}}}\text{C}{{\text{H}}_{\text{3}}}\text{COON}{{\text{H}}_{\text{4}}}\]\[\xrightarrow{\text{ }\!\!\Delta\!\!\text{ }}\]\[\underset{\text{(C)}}{\mathop{\underset{\text{acetamide}}{\mathop{\text{C}{{\text{H}}_{\text{3}}}\text{CON}{{\text{H}}_{\text{2}}}}}\,}}\,\]\[\xrightarrow{\text{B}{{\text{r}}_{\text{2}}}\text{/alkali}}\underset{\text{(D)}}{\mathop{\underset{\text{methyl amine}}{\mathop{\text{C}{{\text{H}}_{\text{3}}}\text{N}{{\text{H}}_{\text{2}}}}}\,}}\,\]


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