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Day 511: JEE Mains Chemistry

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

  1. Question 1

    Chemical Bonding and Molecular Structure. Asked once: 2021 Paper 19

    33
    The interaction energy of London forces between two particles is proportional to rxr^{x}, where rr is the distance between the particles. The value of xx is:

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  2. Question 2

    Chemical Kinetics. Asked once: 27 Jul 2022

    52
    2NO+2H2→N2+2H2O2NO + 2H_{2}\rightarrow N_{2}+ 2H_{2}O The above reaction has been studied at 800∘C800^{\circ}C. The related data are given in the table below The order of the reaction with respect to NO is

  3. Question 3

    Chemical Thermodynamics. Asked once: 8 Apr 2023

    53
    When a 60 W60\text{ }W electric heater is immersed in a gas for 100 s100\text{ }s in a constant volume container with adiabatic walls, the temperature of the gas rises by 5∘C5^{\circ}C. The heat capacity of the given gas is ___JK−1JK^{- 1} (Nearest integer)

  4. Question 4

    Classification of Elements and Periodicity. Asked once: 10 Apr 2023

    122
    Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The energy required to form Mg2+Mg^{2 +} from MgMg is much higher than that required to produce Mg+Mg^{+}. Reason R: Mg2+Mg^{2 +} is small ion and carry more charge than Mg+Mg^{+}. In the light of the above statements, choose the correct answer from the options given below:

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  5. Question 5

    Electrochemistry. Asked once: 2021 Paper 22

    51
    Consider the following cell reaction:
    Cd(s)+Hg2SO4( s)+95H2O(l)⇌CdSO4⋅95H2O(s)+2Hg(l)Cd_{(s)}+Hg_{2}SO_{4(\text{ }s)}+\frac{9}{5}H_{2}O_{(l)}\rightleftharpoons CdSO_{4}\cdot\frac{9}{5}H_{2}O_{(s)}+ 2Hg_{(l)}
    The value of Ecell 0E_{\text{cell~}}^{0} is 4.315 V4.315\text{ }V at 25∘C25^{\circ}C. If ΔH∘=−825.2 kJ mol−1\Delta H^{\circ}= - 825.2\text{ }kJ{\text{ }mol}^{- 1}, the standard entropy change ΔS∘\Delta S^{\circ} in JK−1JK^{- 1} is . (Nearest integer) [Given: Faraday constant =96487Cmol−1= 96487Cmol^{- 1} ]