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Day 184: JEE Mains Chemistry

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

  1. Question 1

    The d- and f-Block Elements. Asked once: 28 Jan 2025 (same type asked 2 times) See all 2 of this type

    31
    Consider ' nn ' is the number of lone pair of electrons present in the equatorial position of the most stable structure of ClF3ClF_{3}. The ions from the following with ' nn ' number of unpaired electrons are : (A) V3+V^{3 +} (B) Ti3+Ti^{3 +} (C) Cu2+Cu^{2 +} (D) Ni2+Ni^{2 +} (E) Ti2+Ti^{2 +} Choose the correct answer from the options given below :

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  2. Question 2

    Haloalkanes and Haloarenes. Asked once: 23 Jan 2025 (same type asked 2 times) See all 2 of this type

    31
    Match the LIST-I with LIST-II
    LIST-I (Name reaction)LIST-II (Product obtainable)
    (A)Swarts reaction(I)Ethyl benzene
    (B)Sandmeyer's reaction(II)Ethyl iodide
    (C)Wurtz-Fittig reaction(III)Cyanobenzene
    (D)Finkelstein reaction(IV)Ethyl fluoride
    Choose the correct answer from the options given below:

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  3. Question 3

    Chemical Bonding and Molecular Structure. Asked once: 2021 Paper 1 (same type asked 2 times) See all 2 of this type

    33
    Which of the following are isostructural pairs? (A) SO42−SO_{4}^{2 -} and CrO42−CrO_{4}^{2 -} (B) SiCl4SiCl_{4} and TiCl4TiCl_{4} (C) NH3NH_{3} and NO3−NO_{3}^{-} (D) BCl3BCl_{3} and BrCl3BrCl_{3}

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  4. Question 4

    Chemical Thermodynamics. Asked once: 2021 Paper 15 (same type asked 2 times) See all 2 of this type

    23
    If work done by system is 200 J200\text{ }J and heat absorbed is 150 J150\text{ }J, then what is change in internal energy?

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  5. Question 5

    Electrochemistry. Asked once: 3 Apr 2025 (same type asked 2 times) See all 2 of this type

    109
    The standard cell potential (Ecell ⊖)\left( E_{\text{cell~}}^{\ominus} \right) of a fuel cell based on the oxidation of methanol in air that has been used to power television relay station is measured as 1.21 V . The standard half cell reduction potential for O2(EO2/H2Oo)O_{2}\left( E_{O_{2}/H_{2}O}^{o} \right) is 1.229 V . Choose the correct statement:

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