PYQ Vault
EbooksTutor

Day 31: JEE Mains Chemistry

5 questions. Try each one first, then open its answer.

  1. Question 1

    Amines. This type asked 4 times: 2021 Paper 4, 2021 Paper 11, 7 Apr 2025, 5 Apr 2026 S1. This one: 5 Apr 2026 S1 See all 4 of this type

    41
    Benzyl isocyanide can be obtained from (A) benzyl bromide + AgCNAgCN (B) benzylamine + CHCl3CHCl_{3}, aq. NaOHNaOH (C) bromobenzene + AgCNAgCN (D) aniline + CHCl3CHCl_{3}, aq. NaOHNaOH (E) 2-phenylethyl bromide + KCNKCN Choose the correct answer from the options given below :

    Tap an option to check your answer.

  2. Question 2

    Coordination Compounds. This type asked 4 times: 28 Jun 2022, 27 Jul 2022, 6 Apr 2023, 5 Apr 2026 S1. This one: 5 Apr 2026 S1 See all 4 of this type

    36
    The correct statements about metal carbonyls are (A) The metal-carbon bonds in metals carbonyls possess both σ\sigma and π\pi-character. (B) Due to synergic bonding interactions between metals and CO ligand the metal-carbon bond becomes weak. (C) The metal-carbon σ\sigma bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant orbital of metal. (D) The metal-carbon π\pi bond is formed by the donation of electrons from filled d-orbital of metal into vacant π∗\pi^{*} orbital of CO. Choose the correct answer from the options given below:

    Tap an option to check your answer.

  3. Question 3

    Equilibrium. This type asked 4 times: 2021 Paper 23, 29 Jul 2022, 30 Jan 2023, 5 Apr 2026 S1. This one: 5 Apr 2026 S1 See all 4 of this type

    31
    Arrange the following resultant mixtures in increasing order of their pH values (A) 10 mL0.2MCa(OH)2+25 mL0.1MHCl10\text{ }mL0.2MCa(OH)_{2} + 25\text{ }mL0.1MHCl (B) 10 mL0.01MH2SO4+10 mL0.01MCa(OH)210\text{ }mL0.01MH_{2}{SO}_{4} + 10\text{ }mL0.01MCa(OH)_{2} (C) 10 mL0.1MH2SO4+10 mL0.1MKOH10\text{ }mL0.1MH_{2}{SO}_{4} + 10\text{ }mL0.1MKOH Choose the correct answer from the options given below :

    Tap an option to check your answer.

  4. Question 4

    Aldehydes, Ketones and Carboxylic Acids. This type asked 4 times: 2021 Paper 4, 8 Apr 2023, 8 Apr 2024, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 4 of this type

    41
    The descending order of acidity among the following compounds is (A) (B) (C) (D) (E) Choose the correct answer from the option given below options

    Tap an option to check your answer.

  5. Question 5

    Biomolecules. This type asked 4 times: 27 Jun 2022, 31 Jan 2023, 11 Apr 2023, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 4 of this type

    43
    A D-aldotetrose on oxidation with concentrated HNO3HNO_{3} resulted in an optically inactive dicarboxylic acid. The structure of the D-aldotetrose is :

    Tap an option to check your answer.