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    NEET Chemistry : Alcohols, Phenols and Ethers

    Multiple Choice Questions

    151.

    When phenol is treated with D2SO4 /D2O, some of the hydrogens get exchanged. The final product in this exchange reaction is

    Answer
    • 152.

    The correct order of decreasing acidity of nitrophenols will be:

    • m-nitrophenol > p-nitrophenol > o-nitrophenol

    • o-nitrophenol > m-nitrophenol > p-nitrophenol

    • p-nitrophenol > m-nitrophenol > o-nitrophenol

    • p-nitrophenol > o-nitrophenol > m-nitrophenol 

    Answer
    • 153.

    The intermediate J in the following Wittig reaction is

    Answer

    • Short Answer Type

    154.

    Both phenol and alcohol contains -OH group. But still phenol is more acidic than alcohol. Explain why?

    Answer

    • Multiple Choice Questions

    155.

    Assertion: o-Nitrophenol is more volatile than p-nitrophenol.

    Reason : Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular H - bonding is in p-nitrophenol.

    • If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

    • If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

    • If Assertion is true but Reason is false.

    • If Assertion is false but Reason is true.

    Answer
    • 156.

    Assertion: Ethers behave as bases in the presence of mineral acids.

    Reason: It is due to the presence of a lone pair of electrons on the oxygen.

    • If both assertion and reason are true and the reason is a correct explanation of the assertion.

    • If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

    • If the assertion is true but the reason is false.

    • If both the assertion and reason are false.

    Answer
    • 157.

    X →PCl5 C2H5Cl, Y →PCl5 CH3COCl

    X and Y are

    • (C2H5)2O and CH3CO2H

    • C2H5I and C2H5CHO

    • C2H5OH and CH3CO2H

    • C2H5OH and C2H5CHO

    Answer
    • 158.

    Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI?

    • CH3-CH2-CH2-CH2-O-CH3

    • CH3-CH2-CH|CH3-O-CH3

    • CH3-C(C3H6)-O-CH3

    • CH3-CH|CH3-CH2-O-CH3

    Answer
    • 159.

    Which one of the following properties are exhibited by phenol?

    • It is soluble in aq. NaOH and evolves CO2 with aq. NaHCO3

    • It is soluble in aq. NaOH and does not evolve CO2 withe aq. NaHCO3

    • It is not soluble in aq. NaOH but evolves CO2 with aq. NaHCO3

    • It is insoluble in aq. NaOH and does not evolve CO2 with aq. NaHCO3

    Answer
    • 160.

    Assertion: Phenol is a weaker acid than ethanol.
    Reason: Groups with +M effect and -I effect decrease acidity at m-position.

    • If both assertion and reason are true and reason is a correct explanation of the assertion.

    • If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

    • If the assertion is true but the reason is false.

    • If both the assertion and reason are false.

    Answer
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