Alcohols and Phenols MCQs for MDCAT Practice

Chemistry section, Alcohols and Phenols chapter. Sample questions from past PMC papers.

1. Question 1
   The oxidative cleavage of the given diol produces
   
   • A.2 molecules of ketone.
   • B.1 molecule of ketone and 1 molecule of ester.
   • C.1 molecule of aldehyde and 1 molecule of ester.
   • D.2 molecules of aldehyde.
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2. Question 2
   Why are lower alcohols more soluble in water than higher alcohols?
   • A.ecause lower alcohols form stronger hydrogen bonds with water due to their smaller size.
   • B.ecause lower alcohols have higher molecular weight, making them more polar.
   • C.ecause higher alcohols have stronger hydrogen bonding with water.
   • D.ecause higher alcohols have longer nonpolar hydrocarbon chains that resist dissolution.
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3. Question 3
   Which is most acidic?
   • A.H2O
   • B.C2H5OH
   • C.C4H9OH
   • D.CH3-CH2-CH2OH
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4. Question 4
   Which of the following statements about the acid-base reaction of phenol is true?
   • A.Phenol acts as a proton acceptor
   • B.Phenol acts as a proton donor
   • C.Phenol does not undergo acid-base reactions
   • D.Phenol reacts with both acids and bases
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5. Question 5
   Phenol is a ____ liquid.
   • A.Dense
   • B.Hard
   • C.Deliquescent
   • D.Intermittent
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6. Question 6
   Which of following compound is solid at room temperature?
   • A.Ethanol
   • B.Phenol
   • C.Butane
   • D.Methanol
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7. Question 7
   Primary alcohols upon oxidation with acified dichromate gives:
   • A.Aldehydes
   • B.Ketones
   • C.Alkenes
   • D.Alkynes
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8. Question 8
   The temperature required for the dehydration of ethanol into ethene in the presence of H2SO4 is:
   • A.130°C
   • B.175°C
   • C.170°C
   • D.180°C
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