Q46.Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H2 SO4 ? JEE Main 2021 (26 Aug Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)
What This Question Tests
This question tests the understanding of the phthalin reaction mechanism, specifically how the availability of reactive ortho/para positions on the phenol ring affects the condensation with phthalic anhydride.
Concepts Tested
📚 NCERT Sections This Tests
7.14 — Give Two Reactions That Show The Acidic Nature Of Phenol. Compare Acidity
Chemistry Class 12 · Chapter 7
7.14 Give two reactions that show the acidic nature of phenol. Compare acidity of phenol with that of ethanol.
7.8 — Ortho And Para Nitrophenols Are More Acidic Than Phenol. Draw The
Chemistry Class 12 · Chapter 7
7.8 Ortho and para nitrophenols are more acidic than phenol. Draw the resonance structures of the corresponding phenoxide ions.
7.17 — Give Equations Of The Following Reactions:
Chemistry Class 12 · Chapter 7
7.17 Give equations of the following reactions: (i) Oxidation of propan-1-ol with alkaline KMnO4 solution. (ii) Bromine in CS2 with phenol. (iii) Dilute HNO3 with phenol. (iv) Treating phenol wih chloroform in presence of aqueous NaOH.
📋 Question Details
- Chapter
- Alcohols Phenols Ethers
- Topic
- Phenols reactions
- Year
- 2021
- Shift
- 26 Aug Shift 2
- Q Number
- Q46
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 11: Alcohols, Phenols and Ethers
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