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Day 342: JEE Mains Chemistry

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

  1. Question 1

    The p-Block Elements. Asked once: 2021 Paper 6 (same type asked 5 times) See all 5 of this type

    49
    The exact volumes of 1MNaOH1MNaOH solution required to neutralise 50 mL50\text{ }mL of 1MH3PO31MH_{3}PO_{3} solution and 100 mL100\text{ }mL of 2MH3PO22MH_{3}PO_{2} solution, respectively, are:

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  2. Question 2

    Amines. Asked once: 22 Jan 2025 (same type asked 4 times) See all 4 of this type

    50
    Consider the following sequence of reactions : →(i)Sn+HCl(ii)NaNO2,HCl0∘C(iii)Cu2Cl2(iv) Na , EtherAproduct\underset{\begin{array}{r} \left( iii \right)Cu_{2}Cl_{2} \\ (iv)\ Na\ ,\ Ether \end{array}}{\overset{\begin{array}{r} \left( i \right)Sn + HCl \\ {\left( ii \right)NaNO}_{2},HCl \\ \mathbf{0{^\circ}C} \end{array}}{\rightarrow}}A_{product} Molar mass of the product formed (A) is ______ g mol−1g\ mol^{- 1}.

  3. Question 3

    Amines. Asked once: 1 Feb 2024 (same type asked 4 times) See all 4 of this type

    144
    Number of compounds which give reaction with Hinsberg's reagent is ___ .

  4. Question 4

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 24 Jan 2023 (same type asked 4 times) See all 4 of this type

    33
    Increasing order of stability of the resonance structures is: (A) (B) (C) (D) Choose the correct answer from the options given below:

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  5. Question 5

    Some Basic Concepts of Chemistry. Asked once: 26 Jul 2022 (same type asked 4 times) See all 4 of this type

    141
    A 10 g10\text{ }g mixture of hydrogen and helium is contained in a vessel of capacity 0.0125 m30.0125{\text{ }m}^{3} at 6 bar and 27∘C27^{\circ}C. The mass of helium in the mixture is g. (nearest integer) Given: R=8.3JK−1 mol−1R = 8.3JK^{- 1}{\text{ }mol}^{- 1} (Atomic masses of HH and HeHe are 1u1u and 4u4u, respectively)