📘 Alcohols, Phenols & Ethers | ऐल्कोहल, फिनॉल और ईथर

1. MCQs with Answers

1. General formula of alcohol: C_nH_2n+2O
2. Phenol is: C₆H₅OH
3. Ethanol is also called: Ethyl alcohol
4. Denatured alcohol contains: Methanol + pyridine
5. IUPAC name of CH₃CH₂OH: Ethanol
6. The dehydration of alcohol gives: Alkene
7. Phenol reacts with bromine water to form: 2,4,6-Tribromophenol
8. Alcohol used in alcoholic beverages: Ethanol
9. Anisole is: Methoxybenzene
10. Williamson synthesis is used for preparation of: Ethers
11. Glycerol is a: Trihydric alcohol
12. Lucas reagent is a mixture of: Conc. HCl + ZnCl₂
13. The strongest acid among alcohol, phenol and water is: Phenol
14. Phenol gives violet colour with: Neutral FeCl₃
15. Diethyl ether is also called: Ethoxyethane

2. Important Reactions

1. C₂H₅OH + Na → C₂H₅ONa + 1/2H₂
2. C₂H₅OH + HCl → C₂H₅Cl + H₂O (ZnCl₂)
3. C₂H₅OH → CH₂=CH₂ + H₂O (H₂SO₄, 443 K)
4. C₆H₅OH + Br₂(aq) → 2,4,6-Tribromophenol + 3HBr
5. C₆H₅OH + CHCl₃ + 3NaOH → o-Hydroxybenzaldehyde + 3NaCl + 2H₂O
6. C₆H₅OH + NaOH → C₆H₅ONa + H₂O
7. C₂H₅ONa + C₂H₅Br → C₂H₅–O–C₂H₅ + NaBr
8. (CH₃)₃COH + HCl → (CH₃)₃CCl + H₂O
9. C₆H₅OH + Zn → C₆H₆ + ZnO
10. CH₃–O–CH₃ + HI → CH₃I + CH₃OH

3. Name Reactions

• Williamson Ether Synthesis
• Reimer–Tiemann Reaction
• Kolbe’s Reaction
• Lucas Test
• Victor Meyer Test
• PCC Oxidation
• Oppenauer Oxidation
• Pinacol–Pinacolone Rearrangement
• Fries Rearrangement
• Claisen Rearrangement

4. IUPAC Naming Practice

1. CH₃OH → Methanol
2. CH₃CH₂OH → Ethanol
3. CH₃CH₂CH₂OH → 1-Propanol
4. CH₃CH(OH)CH₃ → 2-Propanol
5. C₆H₅OH → Phenol
6. CH₃OCH₃ → Methoxymethane
7. C₆H₅OCH₃ → Methoxybenzene (Anisole)
8. CH₃CH₂OCH₃ → Ethoxymethane
9. CH₃CH₂CH₂OCH₃ → 1-Methoxypropane
10. HO–CH₂CH₂–OH → Ethane-1,2-diol

5. Short Questions

1. Define alcohol with an example.
2. What is phenol? Give its structure.
3. Write the reaction of phenol with bromine water.
4. State one use of ethanol.
5. What is denatured alcohol?
6. Give the formula of glycerol.
7. What happens when sodium reacts with ethanol?
8. Write the equation of Kolbe’s reaction.
9. Why phenol is more acidic than ethanol?
10. State the IUPAC name of anisole.
11. What is Williamson synthesis?
12. Give one example of dehydration of alcohol.
13. Write the structure of diethyl ether.
14. What happens when phenol reacts with zinc?
15. Give one use of diethyl ether.
16. Write the reaction for Reimer–Tiemann reaction.
17. What is Lucas test used for?
18. State the colour produced by phenol with neutral FeCl₃.
19. Give the IUPAC name of CH₃OCH₂CH₃.
20. What happens when ether reacts with HI?