JEE Main & Advanced Sample Paper JEE Main - Mock Test - 1

  • question_answer
    Which of the following functional groups cannot be reduced to alcohol using \[NaB{{H}_{4}}\] in ethanolic solution?

    A) \[R-O-R\]          

    B) \[RCOCl\]

    C) \[R-COOH\]         

    D) \[R-CHO\]

    Correct Answer: A

    Solution :

    Compounds having \[-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\] moiety in their structure are reduced to alcohols using \[NaB{{H}_{4}}\] in ethanolic solution. Thus \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-Cl,\] \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-OH\] and \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-H\] are reduced while, \[R-O-R\](ethers) are inert and can't be reduced by\[NaB{{H}_{4}}\].


You need to login to perform this action.
You will be redirected in 3 sec spinner