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Chemistry practice Test Timing:1 Hour. Marks: 20
ALCOHOLS, PHENOLS, AND ETHERS
Multiple Choice Questions (MCQs) (1 mark each)
1. The correct IUPAC name of the compound CH3-CH(OH)-CH2-CH3 is:
a) Butan-2-ol
b) Butan-3-ol
c) Pentan-2-ol
d) Butanol
2. Which of the following compounds will react with sodium to give hydrogen gas?
a) Phenol. b) Ethanol. c) Methanol. d) All of these
3. The major product formed when phenol reacts with bromine water is:
a) 2-Bromophenol
b) 3-Bromophenol
c) 2,4,6-Tribromophenol
d) Bromobenzene
4. In the reaction of phenol with CHCl3 and aqueous NaOH the electrophile attack the ring is?
a) CHCl2. b) CHCl3. c) CCl2. d) COCl2
Very Short Answer Questions (2 marks each)
1. Write the chemical equation for the preparation of phenol from chlorobenzene.
2. Explain why phenol is more acidic than ethanol.
3. How does diethyl ether react with concentrated HI? Write the equation.
4. What happens when ethyl alcohol is treated with acetic acid in the presence of concentrated sulfuric acid?
Short Answer Questions (3 marks each)
1. Describe the mechanism of acid-catalyzed dehydration of ethanol to ethene.
2. Explain the Kolbe’s reaction for phenol with an equation.
3. Write the chemical reactions of phenol with:
a) Bromine water
b) Dilute nitric acid
c) Concentrated nitric acid
Long Answer Questions (5 marks each)
1. Compare the acidic nature of alcohols, phenols, and carboxylic acids, with examples and reasoning.
2. Describe the preparation of ethers by Williamson’s synthesis. Explain its limitations with examples.
