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Day 97: JEE Mains Chemistry

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

  1. Question 1

    Amines. This type asked 2 times: 2021 Paper 22, 22 Jan 2025. This one: 22 Jan 2025 See all 2 of this type

    107
    Match the Compounds (List-I) with the appropriate Catalyst/Reagents (List-II) for their reduction into corresponding amines.
    List-I (Compound)List-II (Catalyst/Reagents)
    (A)R−CONH2R-CONH_{2}(I)NaOHNaOH (aqueous)
    (B)Nitrobenzene, C6H5NO2C_{6}H_{5}NO_{2}(II)H2/NiH_{2}/Ni
    (C)R−C≡NR-C \equiv N(III)LiAlH4LiAlH_{4}, H2OH_{2}O
    (D)N-Alkylphthalimide(IV)Sn,HClSn, HCl
    Choose the correct answer from the options given below :

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  2. Question 2

    Electrochemistry. This type asked 2 times: 27 Jan 2024, 22 Jan 2025. This one: 22 Jan 2025 See all 2 of this type

    119
    Given below are two statements : Statement (I) : Corrosion is an electrochemical phenomenon in which pure metal acts as an anode and impure metal as a cathode. Statement (II) : The rate of corrosion is more in alkaline medium than in acidic medium. In the light of the above statements, choose the correct answer from the options given below :

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  3. Question 3

    The p-Block Elements. This type asked 2 times: 2021 Paper 16, 22 Jan 2025. This one: 22 Jan 2025 See all 2 of this type

    39
    Which of the following electrolyte can be used to obtain H2 S2O8H_{2}{\text{ }S}_{2}O_{8} by the process of electrolysis?

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  4. Question 4

    Chemical Bonding and Molecular Structure. This type asked 2 times: 2021 Paper 17, 9 Apr 2024. This one: 9 Apr 2024 See all 2 of this type

    149
    Total number of electron present in (π∗)\left( \pi^{*} \right) molecular orbitals of O2,O2+O_{2},O_{2}^{+}and O2−O_{2}^{-}is ____

  5. Question 5

    Chemical Thermodynamics. This type asked 2 times: 15 Apr 2023, 9 Apr 2024. This one: 9 Apr 2024 See all 2 of this type

    150
    When ΔHvap =30 kJ/mol\Delta H_{\text{vap~}}= 30\text{ }kJ/mol and ΔSvap =75 J mol−1 K−1\Delta S_{\text{vap~}}= 75\text{ }J{\text{ }mol}^{- 1}{\text{ }K}^{- 1}, then the temperature of vapour, at one atmosphere is ____ KK.