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Carboxylic Acid & Derivatives Test - 8

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Carboxylic Acid & Derivatives Test - 8
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Benzoic acid gives benzene on being heated with X and phenol gives benzene on being heated with Y. Therefore X and Y are respectively

    Solution

     

  • Question 2
    1 / -0

    Oxalic acid on heating with conc. H2​SO4​ gives

    Solution

     

  • Question 3
    1 / -0

    The correct IUPAC name of tartaric acid is

    Solution

    Tartaric acid is

    2,3-dihydroxybutane-l ,4-dioic acid.

     

  • Question 4
    1 / -0

    In a set of reactions of propionic acid yielded a compound D.

    The structure of D would be:

    Solution

    The reaction is Hofmann bromamide reaction.

     

  • Question 5
    1 / -0

    Which of the following will undergo decarboxylation on heating?

    Solution

    Keto acids or 1,3- dicarboxylic acids, on heating undergo decarboxylation. 

    Malonic acid is a 1,3- dicarboxylic acid.

    Hence, it will undergo decarboxylation on heating.

     

  • Question 6
    1 / -0

    What is product Z in the given reaction?

    Solution

    Grignard reagent on reaction with carbon dioxide followed by hydrolysis gives carboxylic acids.

     

  • Question 7
    1 / -0

    Which of the following carboxylic acid undergoes decarboxylation easily?

    Solution

    C6​H5​−CO−CH2​−COOH  undergoes decarboxylation easily as it is beta keto acid. The thermal decarboxylation of beta keto acid is easy.

     

  • Question 8
    1 / -0

    Identify the product C in the series

    Solution

     

  • Question 9
    1 / -0

    Which of the following will give a yellow precipitate with I2​/NaOH?

    Solution

    The  carbonyl compounds and alcohol containing given groups show positive iodoform test.

     

  • Question 10
    1 / -0

    Which of following acid remains unaffected on heating?

    Solution

    It remains unaffected upon heating because the trans double present in the compound at the α position of −COOH group prevents many reactions performed by carboxylic acids. When melted it does isomerize and form maleic anhydride. Few materials are completely immune to heat.

     

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