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Phenols and Eth...

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  • Question 1
    1 / -0.25

     

    Consider the reaction given below,

     

  • Question 2
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    Consider the following reaction sequence,

    I, II and III could be

     

  • Question 3
    1 / -0.25

     

    Consider the following reaction sequence,

    The correct statem ent regarding X, Y and Z is/are

     

  • Question 4
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    Comprehension Type

    Direction : This section contains a passage describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer out of the given 4 options (a), (b), (c) and (d).

    Passage

    Oxirane is a reactive ether, undergo nucleophilic attack at a-carbon in the presence of both acidic and basic medium. The generalised mechanism in the two medium are :

    I. Acidic medium

    II. Basic medium

    As shown above, in acidic medium, nucleophilic attack occur at more substituted α-carbon while in basic medium, nucleophilic attack occur preferably at less substituted α-carbon.

    Q. 

    In the reaction given below, th e final major organic product Y is

     

  • Question 5
    1 / -0.25

     

    Oxirane is a reactive ether, undergo nucleophilic attack at a-carbon in the presence of both acidic and basic medium. The generalised mechanism in the two medium are :

    I. Acidic medium

    II. Basic medium

    As shown above, in acidic medium, nucleophilic attack occur at more substituted α-carbon while in basic medium, nucleophilic attack occur preferably at less substituted α-carbon.

    Q. 

    If X is heated with concentrated H2 SO4 a cyclic compound is formed which is

     

  • Question 6
    1 / -0.25

     

    Oxirane is a reactive ether, undergo nucleophilic attack at a-carbon in the presence of both acidic and basic medium. The generalised mechanism in the two medium are :

    I. Acidic medium

    II. Basic medium

    As shown above, in acidic medium, nucleophilic attack occur at more substituted α-carbon while in basic medium, nucleophilic attack occur preferably at less substituted α-carbon.

    Q. 

    What would be formed if 2-phenyloxirane is treated with CH3 MgBr followed by acid hydrolysis?

     

  • Question 7
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    One Integer Value Correct Type

    Direction : This section contains 5 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

    Q. 

    How many different ether isomers are possible for C3 H6 O  ?

     

  • Question 8
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    Consider the reaction given below,

    Q.

    How many different triols isomers are formed?

     

  • Question 9
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    If propene undergoes oxidation to methyl oxirane, what is the net change in oxidation number of carbon atoms?

     

  • Question 10
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     In the following reaction,


    Q. 

    How many different stereoisomers of product formed ?

     

  • Question 11
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     How many different arene oxide would be formed on mono epoxidation of phenanthrene?

     

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