Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 20236 AprilEvening Shift
Exam
JEE Main
Year
2023
Date
6 April
Shift
Evening Shift
Subject
Chemistry
Chapter
Alcohols Phenols and Ethers

JEE Main 2023 · 6 April · Evening Shift · Chemistry · Alcohols Phenols and Ethers

In the following reaction, ‘ B ’ is

In the following reaction, ‘BB’ is

In the following reaction, ‘ B ’ is

Options

  1. AThe critical angle for a denser-rarer interface is 45 ° . The speed of light in rarer medium is 3 × 10 ^ 8 m s ^ - 1 .
  2. BThe critical angle for a denser-rarer interface is 45 ° . The speed of light in rarer medium is 3 × 10 ^ 8 m s ^ - 1 .
  3. CThe critical angle for a denser-rarer interface is 45 ° . The speed of light in rarer medium is 3 × 10 ^ 8 m s ^ - 1 .
  4. DThe critical angle for a denser-rarer interface is 45 ° . The speed of light in rarer medium is 3 × 10 ^ 8 m s ^ - 1 .

Correct answer

C. The critical angle for a denser-rarer interface is 45 ° . The speed of light in rarer medium is 3 × 10 ^ 8 m s ^ - 1 .

Step-by-step solution

The given reaction is an example of dehydration of alcohol. In this reaction the first step is protonation of alcohol which leads to the formation of carbocation. The carbocation formed undergo rearrangement to get stability. The tertiary carbocation formed in this reaction involved in ring closure, which loses proton to from alkene. The steps are shown below.

In the following reaction, ‘ B ’ is

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