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Carboxylic Acid...

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  • Question 1
    1 / -0.25

     

    Consider the following reaction,

    Q.

    The appropriatensequence of reagent that can best bring about the above conversion is

     

  • Question 2
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    What is the major product in the following reaction?

     

  • Question 3
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    Which of the following has greater enol content than keto counter part?

     

  • Question 4
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    Arrange the following in the increasing order of acidic strength  

    I. H2 CO
    II. CH3 CHO
    III. C6 H5 CH2 CHO

     

  • Question 5
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    One or More than One Options Correct Type

    Direction : This section contains 5 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

    Q.

    Which of the following has (have) more than one enol tautomers?

     

  • Question 6
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    Which can be deduced correctly regarding keto-enol tautomerism in general?

     

  • Question 7
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    The correct statement(s) regarding hydrates of aldehyde and ketone is/are

     

  • Question 8
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    For which of the following equilibrium, Kc is greater than 1?

     

  • Question 9
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    Consider the reaction below,

    The correct statement(s) regarding the above process is/are

     

  • Question 10
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    Comprehension Type

    Direction : This section contains a paragraph, describing theory, experiments, data, etc. Three questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

    Passage

    In general, ketones are less reactive than aldehydes in nucleophilic addition reaction, for both steric and electronic reasons.
    Hence, if a keto-aldehyde is treated with nucleophilic reagent, reaction occur first at aldehyde group.

    Q. 

    The major final product in the following reaction is

     

  • Question 11
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    In general, ketones are less reactive than aldehydes in nucleophilic addition reaction, for both steric and electronic reasons.
    Hence, if a keto-aldehyde is treated with nucleophilic reagent, reaction occur first at aldehyde group.

    Q. 

    How the following transformation can be best brought about?

     

  • Question 12
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    In general, ketones are less reactive than aldehydes in nucleophilic addition reaction, for both steric and electronic reasons.
    Hence, if a keto-aldehyde is treated with nucleophilic reagent, reaction occur first at aldehyde group.

    Consider the following reaction,

    Q. 

    Major product is  

     

  • Question 13
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    One Integer Value Correct Type

    Direction : This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

    Q. 

    How many different enols exist for 4-methyl-3- hexanone ?

     

  • Question 14
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    If all the mono and dienols are considered, how many enols are possible for 2,4-pentanedione?

     

  • Question 15
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    If butanone is treated with D2 O18 /DCI, isotopic exchange occur. What maximum gain in molecular mass is possible in the present case?

     

  • Question 16
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    When acetaldehyde is treated with catalytic amount of H2 SO4 , a stable association product X is formed. How many lone pair of electrons are present in XI

     

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