Top 20 Most Important Alcohol, Phenol & Ether Questions for Class 12 | CBSE & NEET 2025

Top 20 Most Important Alcohol, Phenol & Ether Questions for Class 12 | CBSE & NEET 2025

✨ Are you preparing for CBSE Class 12 Chemistry or NEET? This blog contains the top 20 questions from Alcohols, Phenols & Ethers chapter with detailed handwritten solutions. ✅ Based on NCERT + previous year trends. A must-practice set for scoring high in boards & entrances! 📘

Q1. write the IUPAC name of the following:

Handwritten chemical structure of a compound with CH₃, CH₂, and OH groups for identifying IUPAC name, solved as 3,3-dimethylpent-2-ol.

Ans. 3,3-dimethyl-pent-2-ol

Q2. Write the IUPAC name of the following :

Handwritten structural formula with Br, CH₃, CH₂, and OH groups for identifying the IUPAC name; answer: 2-Bromo-3-methylbut-2-en-1-ol.

Ans. 2-bromo-3-methylbut-2-en-1-ol

Q3. Write the IUPAC name of the following:-

Hand-drawn structure of a compound with a benzene ring and CH₂=CH–CH₂OH side chain; IUPAC name: 3-phenylprop-2-en-1-ol.

Ans. 3-phenylprop-2-en-1-ol

Q4. Write the IUPAC name of the following:-

Hand-drawn structure showing benzene ring attached to CH₂–CH(OH) group; IUPAC name: 2-phenylethanol.

Ans. 2-phenylethanol

Q5. Write the IUPAC name of the following:-

Handwritten solution showing the IUPAC name of 2-methoxy-2-methylpropane organic compound structure – JEE Mains chemistry naming question.

Ans. 2-methoxy-2-methylproane

Q6. Write the IUPAC name of the following:-

Handwritten chemical structure and IUPAC naming of 2,5-dinitrophenol with nitro and hydroxyl groups on benzene ring – JEE Organic Chemistry solution.

Ans. 2,5-dintrophenol

Q7. Write the IUPAC name of the following:-

Handwritten structure and IUPAC name of 2-methylprop-2-en-1-ol – Organic compound with double bond and hydroxyl group for JEE chemistry.

Ans. 2-methylprop-2-enol

Q8. Write the IUPAC name of the following:-

Handwritten structural formula and IUPAC name of 3-Methylbut-2-en-1-ol – organic compound with alkene and alcohol functional group for JEE preparation.

Ans. 3-methylbut-2enol

Q9. Write the IUPAC name of the following:-

Handwritten structure of Butan-2-ol showing OH group on second carbon with complete carbon numbering – ideal for organic chemistry practice.

Ans. Butan-2-ol

Q10. Write the IUPAC name of the following:-

Structural formula of glycerol (propane-1,2,3-triol) with OH groups on each carbon atom

Ans. Propane-1,2,3-triol

Common name(glycerol)

Q11. Carry out the following conversion: phenol to salicylaldehyde

Ans.

Conversion of phenol to salicylaldehyde via Reimer–Tiemann reaction using chloroform and NaOH

Q12. Carry out the following conversion: propene to propanol

Ans.

Hydroboration-oxidation reaction of propene to form propanol following anti-Markovnikov addition

Q13. Predict the reagent for carry out the following conversion:phenol to benzoquinone

Ans.

Phenol to Benzoquinone oxidation reaction using Na₂Cr₂O₇ and H₂SO₄ – handwritten organic chemistry JEE notes.

Q14. Predict the following conversion: phenol to 2,4,6-tribromophenol

Ans.

Phenol bromination with aqueous Br₂ to form 2,4,6-tribromophenol – handwritten JEE chemistry notes.

Q15. Predict the following conversion: cumene to phenol

Ans.

Photo-oxidation and hydrolysis of isopropenylbenzene to phenol and acetone – handwritten JEE organic chemistry notes.

Q16. Predict the following conversion: phenol to chlorobenzene

Ans.

Phenol chlorination reaction using FeCl3 and conversion to chlorobenzene – JEE Organic Chemistry handwritten notes

Q17. Predict the following conversion: sodium phenoxide to 2-hydroxybenzoic acid

Ans.

Kolbe reaction mechanism – sodium phenoxide reacts with CO2 forming salicylic acid – JEE Organic handwritten notes

Q18. Write the Kolbe's reaction.

Ans.

Kolbe's reaction from phenol to salicylic acid using NaOH and CO₂ – JEE handwritten notes chemistry

Q19. Predict the following conversion: Ethanol to Ethanenitrile

Ans.

Q20.Why phenol is more acidic than alcohol?

Ans. Phenol is more acidic than phenol is because when we remove hydrogen ion from phenol then the phenoxide ion shows resonance so it is stable where as in alcohols if we remove hydrogen ion there is no resonance stability hence phenol is more acidic than alcohol.

Handwritten chemical comparison showing phenol and ethanol acidity with resonance explanation; phenol is more acidic due to resonance stabilization.

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