JEE Main & Advanced Chemistry Alcohols, Phenols and Ethers / एल्कोहॉल, फीनॉल तथा ईथर Question Bank Properties of alcohol Phenol and Ethers

  • question_answer
    Glycerol was distilled with oxalic acid crystals and the products were led into Fehling solution and warmed. Cuprous oxide was precipitated. It is due to       [KCET 1987]

    A)                 CO

    B)                 HCHO

    C)                 \[C{{H}_{3}}CHO\]          

    D)                 HCOOH

    Correct Answer: D

    Solution :

               \[HOOC-COOH\underset{\text{Decarboxylation}}{\mathop{\xrightarrow{\text{Glycerol}}}}\,HCOOH+C{{O}_{2}}\]                                 \[HCOOH+\text{Fehling}\,\text{solution}\to \underset{\text{Red}\,\text{ppt}\text{.}}{\mathop{C{{u}_{2}}O}}\,+C{{O}_{2}}+{{H}_{2}}O\]


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