Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
99 Percentile Qs Bank for JEE MainChemistryAldehydes and Ketones

Which of the following statement is false?

Options

  1. AOnly Tollen's reagent can oxidise both aliphatic and aromatic aldehydes.
  2. BOximes are less acidic than hydroxylamine.
  3. CSodium borohydride does not reduce carboxyl group.
  4. DDialkyl cadmium is considered superior to Grignard reagent for the preparation of a ketone from an acid chlori

Correct answer

B. Oximes are less acidic than hydroxylamine.

Step-by-step solution

Oxime are more acidic than hydroxylamine because, there is a delocalisation of -electrons (i.e., resonance) and it stabilises conjugate acid. While in hydroxylamine, there is no such resonance.

Practice Aldehydes and Ketones on Quantrex Academy →

More from Aldehydes and Ketones

Consider the following reaction. The major product (P) formed is: 2026' x ' is the product which is obtained from benzene by reacting it with carbon monoxide and hydrogen chloride in the presence of cuprous chloride. ' y ' is the major product obtain 2026' x ' is the product which is obtained by the hydrolysis of prop-1-yne in the presence of mercuric sulphate under dilute acidic medium at 333 K. ' y ' is the product which is obtai 2026Given below are two statements: Statement-I: The condensation reaction between CH₃-CH=O and under optimum pH will produce . Statement-II: The molecule will generate Ph-CH=O in the 2026An organic compound " x " where molar ratio of C, O and H are equal, on treatment with 50 % KOH under reflux followed by acidification produced " y ". The most likely structure of 2026Given below are the four isomeric compounds ( P , Q , R , S ) Identify correct statements from below. A. Q , R and S will give precipitate with 2,4- DNP . B. P and Q will give posi 2026Given below are two statements: Statement I : Cross aldol condensation between two different aldehydes will always produce four different products. Statement II : When semicarbazid 2026Which of the following statements are TRUE about Haloform reaction?: A. Sodium hypochlorite reacts with KI to give KOI. B. KOI is a reducing agent. C. , -unsaturated methylketone ( 2026 Full Aldehydes and Ketones list All 99 Percentile Qs Bank for JEE Main PYQs