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Day 77: JEE Mains Chemistry

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

  1. Question 1

    Solutions. Asked 2 times: 2021 Paper 11*, 9 Apr 2024 (* = numbers or wording changed that year) See all 2 times it was asked

    143
    The vapour pressure of pure benzene and methyl benzene at 27∘C27^{\circ}C is given as 80 Torr and 24 Torr, respectively. The mole fraction of methyl benzene in vapour phase, in equilibrium with an equimolar mixture of those two liquids (ideal solution) at the same temperature is _____ ×10−2\times10^{- 2} (nearest integer)

  2. Question 2

    The d- and f-Block Elements. Asked 2 times: 1 Feb 2023, 9 Apr 2024 See all 2 times it was asked

    43
    The electronic configuration of Cu(II)Cu(II) is 3 d93{\text{ }d}^{9} whereas that of Cu(I)Cu(I) is 3d103d^{10}. Which of the following is correct?

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  3. Question 3

    Electrochemistry. Asked 2 times: 8 Apr 2023, 8 Apr 2024 See all 2 times it was asked

    138
    The reaction;
    12H2( g)+AgCl(s)→H(aq)++Cl(aq)−+Ag(s)\frac{1}{2}H_{2(\text{ }g)}+AgCl_{(s)}\rightarrow H_{(aq)}^{+}+Cl_{(aq)}^{-}+Ag_{(s)}
    occurs in which of the following galvanic cell:

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  4. Question 4

    The d- and f-Block Elements. Asked 2 times: 30 Jan 2024, 8 Apr 2024 See all 2 times it was asked

    139
    Given below are two statements: Statement (I): Fusion of MnO2MnO_{2} with KOHKOH and an oxidising agent gives dark green K2MnO4K_{2}MnO_{4}. Statement (II): Manganate ion on electrolytic oxidation in alkaline medium gives permanganate ion. In the light of the above statements, choose the correct answer from the options given below.

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  5. Question 5

    The d- and f-Block Elements. Asked 2 times: 27 Jun 2022, 6 Apr 2024 See all 2 times it was asked

    52
    The difference in the 'spin-only' magnetic moment values of KMnO4KMnO_{4} and the manganese product formed during titration of KMnO4KMnO_{4} against oxalic acid in acidic medium is ___ BM. (nearest integer)