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Q1. Which of the following compounds is not an alcohol? (2023)
Solution:
Phenol is not classified as an alcohol because it has an aromatic ring, while the others are aliphatic alcohols.
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Q2. Which reaction is characteristic of alcohols? (2020)
Solution:
Dehydration is a characteristic reaction of alcohols where they lose water to form alkenes.
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Q3. What is the main product when phenol reacts with sodium hydroxide?
Solution:
Phenol reacts with sodium hydroxide to form sodium phenoxide, which is a salt of phenol.
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Q4. Which of the following is a characteristic reaction of phenols? (2021) 2021
Solution:
Phenols undergo halogenation readily due to the electron-donating effect of the hydroxyl group.
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Q5. Which alcohol is commonly known as rubbing alcohol?
Solution:
Isopropanol, or 2-Propanol, is commonly referred to as rubbing alcohol.
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Q6. Which alcohol is used as an antifreeze? (2022)
Solution:
Methanol is commonly used as an antifreeze due to its low freezing point.
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Q7. What is the functional group of phenols? (2019) 2019
Solution:
Phenols contain a hydroxyl group (-OH) directly attached to an aromatic ring.
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Q8. What is the functional group present in phenols? (2021) 2021
Solution:
Phenols contain a hydroxyl group (-OH) directly attached to an aromatic hydrocarbon group.
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Q9. What is the product of the oxidation of ethanol?
Solution:
Ethanol oxidizes to acetic acid when reacted with an oxidizing agent.
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Q10. What is the main product when phenol is treated with bromine?
Solution:
Bromine reacts with phenol to form bromophenol, which is a substitution product.
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