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
Aldehydes and Ketones

JEE Main 2023 · 6 April · Evening Shift · Chemistry · Aldehydes and Ketones

Among the following the number of compounds which will give...

Among the following the number of compounds which will give positive iodoform reaction is _____.

(a) 11-Phenylbutan-22-one

(b) 22-Methylbutan-22-ol

(c) 33-Methylbutan-22-ol

(d) 11-Phenylethanol

(e) 3,33, 3-dimethylbutan-22-one

(f) 11-Phenylpropan-22-ol

Among the following the number of compounds which will give positive iodoform reaction is _____. (a) 1 -Phenylbutan- 2

Correct answer

0

Step-by-step solution

Iodoform test is used to check the presence of carbonyl compounds with the structure R−CO−CH3R - CO - {CH}_{3} or alcohols with the structure R−CH(OH)−CH3R - CH ( OH ) - {CH}_{3} in a given unknown substance. The reaction of iodine, a base and a methyl ketone gives a yellow precipitate along with an “antiseptic” smell.

Among the following the number of compounds which will give positive iodoform reaction is _____. (a) 1 -Phenylbutan- 2

Hence, (c), (d), (e) and (f) give iodoform reaction

Practice Aldehydes and Ketones on Quantrex Academy →

More from Aldehydes and Ketones

Consider the following reaction. The major product (P) formed is: JEE Main 2026' x ' is the product which is obtained from benzene by reacting it with carbon monoxide… JEE Main 2026' x ' is the product which is obtained by the hydrolysis of prop-1-yne in the presence of… JEE Main 2026Given below are two statements: Statement-I: The condensation reaction between CH_3-CH=O… JEE Main 2026An organic compound " x " where molar ratio of C, O and H are equal, on treatment with… JEE Main 2026Given below are the four isomeric compounds (P, Q, R, S) Identify correct statements from… JEE Main 2026Given below are two statements: Statement I : Cross aldol condensation between two… JEE Main 2026Which of the following statements are TRUE about Haloform reaction?: A. Sodium… JEE Main 2026 Full Aldehydes and Ketones list All JEE Main PYQs