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Carboxylic Acid & Derivatives Test - 6

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Carboxylic Acid & Derivatives Test - 6
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  • Question 1
    1 / -0

    The reaction of an ester "RCOOR with an alcohol R ''OH in the presence of an acid gives

    Solution

    An ester on refluxing with a large excess of an alcohol in presence of a little acid or alkali, undergoes exchange of alcohol residues as

     

  • Question 2
    1 / -0

    Carboxylic acids dimerise due to:

    Solution

    Due to the small size and strong hydrogen bonding between the molecule (intermolecular), they overlap and form a dimer in aqueous condition.

     

  • Question 3
    1 / -0

    Which of the following is most acidic ?

    Solution

    It is picric acid because it has three −NO2​ group are arranged which are ortho and para position

     

  • Question 4
    1 / -0

    A colourless organic compound gives brisk effervescence with a mixture of sodium nitrite and dil. HCl. It could be

    Solution

     

  • Question 5
    1 / -0

    When 2 – hydroxyl benzoic acid distilled with zinc dust, it give

    Solution

    Zinc facilitates the reduction of 2 hydroxybenzoic acid to yield benzoic acid.

     

  • Question 6
    1 / -0

    What is formed when benzoyl chloride reacts with aniline in presence of sodium hydroxide

    Solution

    It is known as Schotten Baumann reaction.

     

  • Question 7
    1 / -0

    Soap, which is an organic compound is made up of?

    Solution

    Soap, which is an organic compound is made up of fatty acids and glycerol, which in turn contain carbon in them as the basic constituent. Thus, we find that an organic compound is made up from two other organic compounds. There is no spiritual force acting in it. Carbon makes up most of these compounds.

     

  • Question 8
    1 / -0

    Aspirin is obtained by the reaction of salicylic acid with

    Solution

    The aspirin is obtained by the reaction of salicylic acid with acetyl chloride. It is used as an analgesic to relieve body pain.

     

  • Question 9
    1 / -0

    The order of decreasing rate of reaction with ammonia is

    Solution

    NH3 being nucleophile will attack acid anhydride and esters readily but will not attack another nucleophile (Lewis base) ether. Therefore order will be Anhydrides > Esters > Ethers

     

  • Question 10
    1 / -0

    Oxalic acid when reduced with zinc and H2SO4 gives

    Solution

     

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