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Alcohols Test - 8
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  • Question 1/9
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    Consider the following reaction sequence,

    R  —OH    R —I   R —NO2  Blue

    Hence, R —OH could be

     

  • Question 2/9
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    Consider the following reaction,

    The correct statement(s) concerning X and Y is/are

     

  • Question 3/9
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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

    An organic compound X (C9 H12 O) gives the following reactions :
    i. Na - Slow gas bubble formation
    ii. Acetic anhydride - Pleasent smelling liquid
    iii. CrO3 -H2 SO4 - Blue-green solution
    iv. Hot KMnO4 - Benzoic acid
    v. Br2 -CCI4 - No decolouration
    vi. I2 + NaOH - Yellow solid is formed
    vii. X rotates the plane polarised light

    Q. 

    The structure of X is

     

  • Question 4/9
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    An organic compound X (C9 H12 O) gives the following reactions :
    i. Na - Slow gas bubble formation
    ii. Acetic anhydride - Pleasent smelling liquid
    iii. CrO3 -H2 SO4 - Blue-green solution
    iv. Hot KMnO4 - Benzoic acid
    v. Br2 -CCI4 - No decolouration
    vi. I2 + NaOH - Yellow solid is formed
    vii. X rotates the plane polarised light

    Q. 

    If X is treated with HCI in the presence of ZnCI2 , the major product would be

     

  • Question 5/9
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    An organic compound X (C9 H12 O) gives the following reactions :
    i. Na - Slow gas bubble formation
    ii. Acetic anhydride - Pleasent smelling liquid
    iii. CrO3 -H2 SO4 - Blue-green solution
    iv. Hot KMnO4 - Benzoic acid
    v. Br2 -CCI4 - No decolouration
    vi. I2 + NaOH - Yellow solid is formed
    vii. X rotates the plane polarised light

    Q. 

    An isomer of X, Y was also found to be optically active. It showed the same reactions as X except (vi). Hence, Y is

     

  • Question 6/9
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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).

    An organic compound X (C5 H12 O) is chiral. Also

    Q.

    How many primary hydrogens are present in X?

     

  • Question 7/9
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    An alcohol X (C7 H16 O) gives immediate turbidity with HCI/ZnCI2 and can be resolved into enantiomers. Also X has a tertiary hydrogen. How many CH3 —groups are present in X?

     

  • Question 8/9
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    An alcohol X (C4 H10 O3 ) is chiral and absorbs two moles of HIO4 per mole of X. How many stereoisomers exist for X?

     

  • Question 9/9
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    An organic compound X (C7 H16 O) gives effervescence with Na. X has both enantiomers and diastereomers. X gives yellow precipitate with alkaline iodine solution. With CrO3 - H2 SO4 , X is converted into C7 H14 O  (Y) which has enantiom ers but not diastereom ers. X on refluxing with H2 SO4 isomerises to Z which neither gives yellow precipitate with alkaline iodine nor changes colour of CrO3 - H2 SO4 . What is the minim um number of carbons that can be present in the parent chain of X ?

     

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