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Day 542: JEE Mains Chemistry

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

  1. Question 1

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 24 Jan 2023

    127
    Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

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  2. Question 2

    Amines. Asked once: 27 Jul 2022

    136
    An organic compound ' AA ' contains nitrogen and chlorine. It dissolves readily in water to give a solution that turns litmus red. Titration of compound ' AA ' with standard base indicates that the molecular weight of ' AA ' is 131±2131 \pm 2. When a sample of ' AA ' is treated with aq. NaOHNaOH, a liquid separates which contains NN but not ClCl. Treatment of the obtained liquid with nitrous acid followed by phenol gives orange precipitate. The compound ' AA ' is:

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  3. Question 3

    Chemical Thermodynamics. Asked once: 27 Jun 2022

    33
    Match List-I with List-II
    List-IList-II
    (A)Spontaneous process(I) ΔH<0\Delta H < 0
    (B)Process with ΔP=0, ΔT=0\Delta P = 0,\ \Delta T = 0(II) ΔGT,P<0\Delta G_{T,P}< 0
    (C)ΔHreaction\Delta H_{\text{reaction}}(III) Isothermal and isobaric process
    (D)Exothermic process(IV) [Bond energies of molecules in reactants] - [Bond energies of product molecules]
    Choose the correct answer from the options given below:

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  4. Question 4

    Classification of Elements and Periodicity. Asked once: 2021 Paper 9

    32
    The ionic radius of Na+Na^{+}ions is 1.02Å1.02\text{Å}. The ionic radii (in Å\text{Å} ) of Mg2+Mg^{2 +} and Al3+Al^{3 +}, respectively, are-

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  5. Question 5

    Haloalkanes and Haloarenes. Asked once: 2021 Paper 21

    41
    The major product (A) formed in the reaction given below is:

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