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Day 12: JEE Mains Chemistry

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

  1. Question 1

    Equilibrium. This type asked 6 times: 26 Jul 2022, 29 Jan 2023, 4 Apr 2024, 8 Apr 2024, 4 Apr 2026 S1, 8 Apr 2026 S2. This one: 8 Apr 2026 S2 See all 6 of this type

    30
    Consider the following reactions in which all the reactants and products are present in gaseous state 2xy⇌x2+y2 K1=2.5×1052xy \rightleftharpoons x_{2}+y_{2}{\text{ }K}_{1}= 2.5 \times10^{5}
    xy+12z2⇌xyz K2=5×10−3xy +\frac{1}{2}z_{2}\rightleftharpoons xyz\ K_{2}= 5 \times10^{- 3}
    The value of K3K_{3} for the equilibrium 12x2+12y2+12z2⇌xyz\frac{1}{2}x_{2}+\frac{1}{2}y_{2}+\frac{1}{2}z_{2}\rightleftharpoons xyz is :

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  2. Question 2

    Chemical Bonding and Molecular Structure. This type asked 6 times: 25 Jun 2022, 29 Jul 2022, 29 Jan 2023, 8 Apr 2024, 23 Jan 2025, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 6 of this type

    28
    Given below are two statements: Statement I: The number of compounds among SO2,SO3,SF4,SF6{SO}_{2},{SO}_{3},{SF}_{4},{SF}_{6} and H2 SH_{2}\text{ }S in which sulphur does not obey the Octet rule is 3 . Statement II : Among [H2O,ClF3,SF4],[NH3\left\lbrack H_{2}O,{ClF}_{3},{SF}_{4} \right\rbrack,\left\lbrack {NH}_{3} \right.,  BrF5,SF4], [BrF5, ClF3, XeF4]\left. \ {BrF}_{5},{SF}_{4} \right\rbrack,\ \left\lbrack {BrF}_{5},\ {ClF}_{3},\ {XeF}_{4} \right\rbrack and  [XeF4\ \left\lbrack {XeF}_{4} \right.,  ClF3,H2O]\left. \ {ClF}_{3},H_{2}O \right\rbrack, the number of sets in which all the molecules have one lone pair of electrons on the central atom is 1 . In the light of the above statements, choose the correct answer from the options given below :

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  3. Question 3

    Coordination Compounds. This type asked 6 times: 2021 Paper 12, 28 Jun 2022, 31 Jan 2024, 21 Jan 2026 S1, 28 Jan 2026 S1, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 6 of this type

    36
    Which of the following sequence of hybridization, geometry and magnetic nature are correct for the given coordination compounds ? (A) [NiCl4]2−−sp3\left\lbrack {NiCl}_{4} \right\rbrack^{2 -} - {sp}^{3}, tetrahedral, paramagnetic (B) [Ni(NH3)6]2+−sp3 d2\left\lbrack Ni\left( {NH}_{3} \right)_{6} \right\rbrack^{2 +} - {sp}^{3}{\text{ }d}^{2}, octahedral, paramagnetic (C) [Ni(CO)4]−sp3\left\lbrack Ni(CO)_{4} \right\rbrack - {sp}^{3}, tetrahedral, paramagnetic (D) [Ni(CN)4]2−−dsp2\left\lbrack Ni(CN)_{4} \right\rbrack^{2 -} - {dsp}^{2}, square planar diamagnetic Choose the correct answer from the options given below :

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  4. Question 4

    Some Basic Concepts of Chemistry. This type asked 6 times: 28 Jun 2022, 25 Jan 2023, 5 Apr 2024, 24 Jan 2025, 28 Jan 2025, 6 Apr 2026 S1. This one: 6 Apr 2026 S1 See all 6 of this type

    26
    An oxide of iron contains 69.9%69.9\% iron, its empirical formula, is : (Given : Molar mass of Fe and O are 56 and 16 g mol−116\text{ }g{\text{ }mol}^{- 1} respectively.)

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  5. Question 5

    Structure of Atom. This type asked 6 times: 2021 Paper 9, 2021 Paper 25, 26 Jun 2022, 8 Apr 2023, 1 Feb 2024, 6 Apr 2026 S1. This one: 6 Apr 2026 S1 See all 6 of this type

    28
    Match List-I with List-II :
    List-I (Orbital)List-II (Radial nodes and nodal plane)
    (A)2s(I)1 Radial node + two nodal planes
    (B)3s(II)1 Radial node + one nodal plane
    (C)3p(III)2 Radial nodes + No nodal plane
    (D)4d(IV)1 Radial node + No nodal plane.
    Choose the correct answer from the options given below:

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