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Day 336: JEE Mains Chemistry

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

  1. Question 1

    Equilibrium. Asked once: 2021 Paper 13 (same type asked 5 times) See all 5 of this type

    43
    For N2O4(g)⇌2NO2(g)N_{2}O_{4}(g)\rightleftharpoons 2NO_{2}(g), KP=476K_{P}= 476. Find KCK_{C} at 288 K288\text{ }K. (Nearest integer)

  2. Question 2

    Structure of Atom. Asked once: 30 Jan 2023 (same type asked 5 times) See all 5 of this type

    132
    Maximum number of electrons that can be accommodated in shell with n=4n = 4

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  3. Question 3

    Chemical Bonding and Molecular Structure. Asked once: 10 Apr 2023 (same type asked 5 times) See all 5 of this type

    34
    The pair from the following pairs having both compounds with net non-zero dipole moment is

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  4. Question 4

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 2021 Paper 15 (same type asked 5 times) See all 5 of this type

    35
    In Kjeldahl method, 0.8 g0.8\text{ }g of organic compound is used. % of nitrogen come out to be 46%46\%. the mlml of 1MH2SO41MH_{2}SO_{4} used to neutralize NH3NH_{3}

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  5. Question 5

    Chemical Kinetics. Asked once: 5 Apr 2024 (same type asked 5 times) See all 5 of this type

    147
    Consider the following single step reaction in gas phase at constant temperature.
    2 A(g)+B(g)→C(g)2{\text{ }A}_{(g)}+B_{(g)}\rightarrow C_{(g)}
    The initial rate of the reaction is recorded as r1r_{1} when the reaction starts with 1.5 atm1.5\text{ }atm pressure of AA and 0.7 atm pressure of B. After some time, the rate r2r_{2} is recorded when the pressure of CC becomes 0.5 atm0.5\text{ }atm. The ratio r1:r2r_{1}:r_{2} is _____ ×10−1\times10^{- 1}. (Nearest integer)