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Day 233: JEE Mains Chemistry

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

  1. Question 1

    Electrochemistry. Asked once: 26 Jul 2022 (same type asked 5 times) See all 5 of this type

    57
    The amount of charge in FF (Faraday) required to obtain one mole of iron from Fe3O4Fe_{3}O_{4} is (Nearest Integer)

  2. Question 2

    Some Basic Concepts of Chemistry. Asked once: 26 Jul 2022 (same type asked 5 times) See all 5 of this type

    38
    Which of the given reactions is not an example of disproportionation reaction?

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  3. Question 3

    Some Basic Concepts of Chemistry. Asked once: 29 Jan 2024 (same type asked 5 times) See all 5 of this type

    49
    Chlorine undergoes disproportionation in alkaline medium as shown below: aCl2( g)+bOH−(aq)→cClO−(aq)+dCl−(aq)aCl_{2}(\text{ }g) + bOH^{-}(aq) \rightarrow cClO^{-}(aq) + dCl^{-}(aq) +eH2O(l)+ eH_{2}O(l) The values of a,b,ca,b,c and dd in a balanced redox reaction are respectively:

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  4. Question 4

    Coordination Compounds. Asked once: 13 Apr 2023 (same type asked 5 times) See all 5 of this type

    33
    The mismatched combinations are (A) Chlorophyll - Co (B) Water hardness - EDTA (C) Photography - [Ag(CN)2]\left\lbrack Ag(CN)_{2} \right\rbrack (D) Wilkinson catalyst - [(Ph3P)3RhCl]\left\lbrack \left( Ph_{3}P \right)_{3}RhCl \right\rbrack (E) Chelating ligand - D - Penicillamine Choose the correct answer from the options given below:

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  5. Question 5

    Coordination Compounds. Asked once: 14 Jun 2022 (same type asked 5 times) See all 5 of this type

    57
    In the cobalt-carbonyl complex: [Co2(CO)8]\left\lbrack Co_{2}(CO)_{8} \right\rbrack, number of Co-Co bonds is " XX " and terminal COCO ligands is " YY ". X+Y=X + Y =