PYQ Vault
EbooksTutor

Structure of the nickel-dimethylglyoxime complex

This type of question, asked 4 times: 2021 Paper 4, 6 Apr 2024, 22 Jan 2025, 23 Jan 2026 S1. All 4 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2021 Paper 4

    31
    Given below are two statements: Statement I: The identification of Ni2+Ni^{2 +} is carried out by dimethyl glyoxime in the presence of NH4OHNH_{4}OH Statement II: The dimethyl glyoxime is a bidentate neutral ligand. In the light of the above statements, choose the correct answer from the options given below:

    Tap an option to check your answer.

  2. Question 2

    6 Apr 2024

    142
    Consider the following reactions
    NiS+HNO3+HCl→A+NO+S+H2ONiS + HNO_{3} + HCl \rightarrow A + NO + S + H_{2}O
    A+NH4OH+H3C−C(=N−OH)−C(=N−OH)−CH3dimethylglyoxime⟶B+NH4Cl+H2OA + NH_{4}OH + \underset{\text{dimethylglyoxime}}{H_{3}C-C(=N-OH)-C(=N-OH)-CH_{3}} \longrightarrow B + NH_{4}Cl + H_{2}O
    The number of protons that do not involve in hydrogen bonding in the product BB is ____ .

  3. Question 3

    22 Jan 2025

    123
    The complex of Ni2+Ni^{2 +} ion and dimethyl glyoxime contains____ number of Hydrogen (H)(H) atoms.

  4. Question 4

    23 Jan 2026 S1

    38
    The statements that are incorrect about the nickel (II) complex of dimethylglyoxime are : (A) It is red in colour (B) It has a high solubility in water at pH=9pH = 9 (C) The Ni ion has two unpaired d-electrons (D) The N−Ni−NN - Ni - N bond angle is almost close to 90∘90^{\circ} (E) The complex contains four five-membered metallacycles (metal containing rings) Choose the correct answer from the options given below:

    Tap an option to check your answer.