Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Alcohol Phenols and Ethers question

2022 · Q116
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /Alcohol Phenols and Ethers
  5. /2022 · Q116

Alcohol Phenols and Ethers question

2022 · Q116

NEETChemistryAlcohol Phenols and EthersMCQ+4 / −1

Given below are two statements:

Statement I : In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. HCl + ZnCl2, known as Lucas Reagent.

Statement II : Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A
    Both Statement I and Statement II are correct
  2. B
    Both Statement I and Statement II are incorrect
  3. C
    Statement I is correct but Statement II is incorrect
  4. D
    Statement I is incorrect but Statement II is correct
View written solutionFree

Correct answer: C

Primary, secondary and tertiary alcohols can be differentiated by their reaction with (HCl + anhy ZnCl2) Lucas reagent

$\bullet$ 3$^\circ$ alcohol $$\xrightarrow{ZnC{l_2} + HCl} $$ Immediate turbidity at room temperature

$\bullet$ 2$^\circ$ alcohol $$\xrightarrow{ZnC{l_2} + HCl} $$ Turbidity after 5 minutes at room temperature

$\bullet$ 1$^\circ$ alcohol $$\xrightarrow{ZnC{l_2} + HCl} $$ Do not gives turbidity at room temperature

PreviousNext

More from Alcohol Phenols and Ethers

  • Anisole on cleavage with Hl gives :2020 · MCQ
  • The structure of intermediate A in the following reaction, is : Includes diagram2019 · MCQ
  • The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B and C are in the order2018 · MCQ
  • In the reaction, the electrophile involved is Includes diagram2018 · MCQ
  • Compound A, C8H10O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell. A and Y are respectively2018 · MCQ
  • Identify the major products P, Q and R in the following sequence of reactions : Includes diagram2018 · MCQ
  • The heating of phenyl methyl ether with HI produces2017 · MCQ
  • Which one is the most acidic compound?2017 · MCQ