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Day 192: JEE Mains Chemistry

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

  1. Question 1

    The d- and f-Block Elements. Asked once: 24 Jan 2025 (same type asked 2 times) See all 2 of this type

    49
    Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with K4[Fe(CN)6]K_{4}\left\lbrack Fe(CN)_{6} \right\rbrack is :
    Cu2+,Fe3+,Ba2+,Ca2+,NH4+,Mg2+,Zn2+Cu^{2 +},Fe^{3 +},Ba^{2 +},Ca^{2 +},NH_{4}^{+},Mg^{2 +},Zn^{2 +}

  2. Question 2

    Chemical Kinetics. Asked once: 12 Apr 2023 (same type asked 2 times) See all 2 of this type

    59
    The reaction 2NO+Br2→2NOBr2NO +Br_{2}\rightarrow 2NOBr takes places through the mechanism given below: NO+Br2⇌NOBr2NO +Br_{2}\rightleftharpoons NOBr_{2} (fast) NOBr2+NO→2NOBrNOBr_{2}+ NO \rightarrow 2NOBr (slow) The overall order of the reaction is__

  3. Question 3

    Coordination Compounds. Asked once: 23 Jan 2025 (same type asked 2 times) See all 2 of this type

    114
    Identify the coordination complexes in which the central metal ion has d4d^{4} configuration. (A) [FeO4]2−\left\lbrack FeO_{4} \right\rbrack^{2 -} (B) [Mn(CN)6]3−\left\lbrack Mn(CN)_{6} \right\rbrack^{3 -} (C) [Fe(CN)6]3−\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -} (D) (E) [NiF6]2−\left\lbrack NiF_{6} \right\rbrack^{2 -} Choose the correct answer from the options given below :

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  4. Question 4

    Classification of Elements and Periodicity. Asked once: 24 Jan 2025 (same type asked 2 times) See all 2 of this type

    35
    Which of the following Statements are NOT true about the periodic table? (A) The properties of elements are function of atomic weights. (B) The properties of elements are function of atomic numbers. (C) Elements having similar outer electronic configuration are arranged in same period. (D) An element's location reflects the quantum numbers of the last filled orbital. (E) The number of elements in a period is same as the number of atomic orbitals available in energy level that is being filled. Choose the correct answer from the options given below:

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  5. Question 5

    Haloalkanes and Haloarenes. Asked once: 29 Jan 2023 (same type asked 2 times) See all 2 of this type

    124
    The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement)

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