Alcohols & Phenols

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Q1. What is the functional group of alcohols? (2020)

Solution:

The functional group of alcohols is the hydroxyl group (-OH).

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Q2. What is the boiling point trend among alcohols? (2020) 2020

Solution:

The boiling point of alcohols increases with molecular weight due to stronger hydrogen bonding.

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Q3. Which reagent is commonly used to test for the presence of phenols?

Solution:

Bromine water is used to test for phenols, as they will decolorize bromine water.

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Q4. What is the main reaction of phenols with sodium hydroxide? (2020)

Solution:

Phenols react with sodium hydroxide to form sodium phenoxide, which is a salt of phenol.

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Q5. Which alcohol is used as an antifreeze agent? (2022)

Solution:

Methanol is commonly used as an antifreeze agent due to its low freezing point.

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Q6. What is the boiling point trend of alcohols compared to alkanes?

Solution:

Alcohols have higher boiling points than alkanes due to hydrogen bonding.

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Q7. What is the functional group of phenols? (2021)

Solution:

Phenols contain a hydroxyl group (-OH) directly attached to an aromatic hydrocarbon group.

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Q8. What is the IUPAC name of CH3CH2OH? (2021) 2021

Solution:

The compound CH3CH2OH is an alcohol with two carbon atoms, which is named Ethanol.

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Q9. What is the product of the oxidation of 2-Propanol? (2022)

Solution:

2-Propanol oxidizes to form Acetone, which is a ketone.

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Q10. What is the product of the oxidation of ethanol?

Solution:

Ethanol oxidizes to acetic acid when reacted with an oxidizing agent.