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Alcohol, Phenol and Ether Test - 6

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Alcohol, Phenol and Ether Test - 6
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  • Question 1
    1 / -0

    Phenol when distilled with Zn dust gives

    Solution

    Phenol on distillation with zinc dust gives benzene.
    C6H5OH + Zn → ZnO + C6H6

     

  • Question 2
    1 / -0

    Directions For Questions

    The following question has four choices out of which ONLY ONE is correct.

    ...view full instructions

    Which of the following sets is correct in order of decreasing acid strengths?

    Solution

    An electron releasing group (CH3) increases electron density on oxygen tending to decrease the polarity of O-H bond. This decreases the acid strength. In methyl alcohol, the acid strength will be maximum due to the presence of only one electron releasing group followed by iso-propyl alcohol and tertiary butyl alcohol due to the presence of two and three electron releasing groups, respectively. So, the correct order of their decreasing acid strengths is: methyl alcohol, iso-propyl alcohol, tertiary butyl alcohol.

     

  • Question 3
    1 / -0

    The following question has four choices out of which ONLY ONE is correct.

    Neopentyl alcohol reacts with HX according to

    Solution

    Neopentyl alcohol, though a primary alcohol, undergoes SN1 mechanism due to steric hindrance of the bulky alkyl group.

     

  • Question 4
    1 / -0

    Which of the following chemical compounds is not a hydrocarbon?

    Solution

    Ethanol is an alcohol, not a hydrocarbon.

     

  • Question 5
    1 / -0

    Which of the following functional compounds do not give Schotten-Baumann reaction?

    Solution

    Schotten-Baumann reaction is the acylation of alcohols, phenols and amines, and not ethers.
    It is done by shaking with aromatic acyl chloride in the presence of a base, usually aqueous sodium hydroxide.

    Hence, this is not a reaction of ethers.

     

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