PYQ Vault
EbooksTutor

Semicarbazone formation from ethanal: structure of the product

This type of question, asked 2 times: 30 Jan 2024, 5 Apr 2026 S2. All 2 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    30 Jan 2024

    57
    The compound formed by the reaction of ethanal with semicarbazide contains ______ number of nitrogen atoms

  2. Question 2

    5 Apr 2026 S2

    41
    Given below are two statements : Statement-I : The condensation reaction between CH3−CH=O{CH}_{3} - CH = O and semicarbazide, H2N−NH−CO−NH2{H}_{2}N - NH - CO - {NH}_{2}, under optimum pH will produce CH3−CH=N−CO−NH−NH2{CH}_{3} - CH = N - CO - NH - {NH}_{2} Statement-II : The molecule Ph−CH(OH)(OCH3)Ph - CH(OH)(O{CH}_{3}) will generate Ph−CH=OPh - CH = O in the presence of dilute acid. In the light of the above statements, choose the correct answer from the options given below:

    Tap an option to check your answer.