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Day 228: JEE Mains Chemistry

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

  1. Question 1

    Chemical Kinetics. Asked once: 11 Apr 2023 (same type asked 5 times) See all 5 of this type

    58
    KClO3+6FeSO4+3H2SO4→ KCl+3Fe2(SO4)3+3H2OKClO_{3}+ 6FeSO_{4}+ 3H_{2}SO_{4}\rightarrow \ KCl + 3Fe_{2}\left( SO_{4} \right)_{3}+ 3H_{2}O The above reaction was studied at 300 K300\text{ }K by monitoring the concentration of FeSO4FeSO_{4} in which initial concentration was 10M10M and after half an hour became 8.8M8.8M. The rate of production of Fe2(SO4)3Fe_{2}\left( SO_{4} \right)_{3} is___ ×10−6 mol L−1 s−1\times10^{- 6}\text{ }mol{\text{ }L}^{- 1}{\text{ }s}^{- 1}. (Nearest integer)

  2. Question 2

    Equilibrium. Asked once: 29 Jan 2024 (same type asked 5 times) See all 5 of this type

    54
    For the reaction N2O4( g)⇌2NO2( g)N_{2}O_{4}(\text{ }g) \rightleftharpoons 2NO_{2}(\text{ }g), Kp=0.492 atmK_{p}= 0.492\text{ }atm at 300 K.Kc300\text{ }K.K_{c} for the reaction at same temperature is ____ ×10−2\times10^{- 2}. (Given: R=0.082 L atm mol−1 K−1R = 0.082\text{ }L\text{ }atm{\text{ }mol}^{- 1}{\text{ }K}^{- 1} )

  3. Question 3

    Structure of Atom. Asked once: 4 Apr 2024 (same type asked 5 times) See all 5 of this type

    141
    The maximum number of orbitals which can be identified with n=4n = 4 and ml=0m_{l}= 0 is _______

  4. Question 4

    Chemical Bonding and Molecular Structure. Asked once: 4 Apr 2024 (same type asked 5 times) See all 5 of this type

    39
    Which one of the following molecules has maximum dipole moment?

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  5. Question 5

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 25 Jul 2022 (same type asked 5 times) See all 5 of this type

    58
    While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from 0.25 g0.25\text{ }g of the compound neutralized 2.5 mL2.5\text{ }mL of 2MH2SO42MH_{2}SO_{4}. The percentage of nitrogen present in organic compound is .......