Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202126 AugustEvening Shift
Exam
JEE Main
Year
2021
Date
26 August
Shift
Evening Shift
Subject
Chemistry
Chapter
Alcohols Phenols and Ethers

JEE Main 2021 · 26 August · Evening Shift · Chemistry · Alcohols Phenols and Ethers

Which one of the following phenols does not give colour when...

Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H2SO4{H}_{2}{SO}_{4} ?Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H _Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H _Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H _Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H _Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H _

Options

  1. AIn the circuit shown, the switch S_ 1 is closed at time t=0 and the switch S_ 2 is kept open. At some later time (t_ 0
  2. BIn the circuit shown, the switch S_ 1 is closed at time t=0 and the switch S_ 2 is kept open. At some later time (t_ 0
  3. CIn the circuit shown, the switch S_ 1 is closed at time t=0 and the switch S_ 2 is kept open. At some later time (t_ 0
  4. DIn the circuit shown, the switch S_ 1 is closed at time t=0 and the switch S_ 2 is kept open. At some later time (t_ 0

Correct answer

D. In the circuit shown, the switch S_ 1 is closed at time t=0 and the switch S_ 2 is kept open. At some later time (t_ 0

Step-by-step solution

Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H _

Phenol and its derivatives react at para position with phthalic anhydride. In p\mathrm{p}-cresol para position is blocked. So reaction not possible.

Practice Alcohols Phenols and Ethers on Quantrex Academy →

More from Alcohols Phenols and Ethers

Considering LiBH_4 reduces an ester group to the corresponding alcohol and does not… JEE Advanced 2026The major product of which of the following reaction is not obtained by rearrangement… JEE Main 2026Consider the following reaction. Statement I : In the above reaction, product formed will… JEE Main 2026Consider the following sequence of reactions The major product P is: JEE Main 2026Arrange the following compounds according to increasing order of boiling points.… JEE Main 20264.7 g of phenol is heated with Zn to give product X. If this reaction goes to 60\%… JEE Main 2026Consider compounds A, B and C with following structural formulae A = CH _3 - CH _2 - CH… JEE Main 2026One mole of phenol is treated with dilute HNO _3 at 298 K to give a mixture of products.… JEE Main 2026 Full Alcohols Phenols and Ethers list All JEE Main PYQs