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Day 317: JEE Mains Chemistry

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

  1. Question 1

    Solutions. Asked once: 2021 Paper 17 (same type asked 4 times) See all 4 of this type

    57
    In a solvent 50%50\% of an acid HA dimerizes and the rest dissociates. The van't Hoff factor of the acid is ____ ×10−2\times10^{- 2}. (Round off to the nearest integer)

  2. Question 2

    Hydrocarbons. Asked once: 12 Apr 2023 (same type asked 3 times) See all 3 of this type

    43
    2-Hexene → (i) O3 (ii) H2O\underset{\text{~(ii)~}H_{2}O}{\overset{\text{~(i)~}O_{3}}{\rightarrow}} Products The two products formed in above reaction are -

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  3. Question 3

    Some Basic Concepts of Chemistry. Asked once: 26 Jul 2022 (same type asked 3 times) See all 3 of this type

    51
    Chlorophyll extracted from the crushed green leaves was dissolved in water to make 2 L2\text{ }L solution of MgMg of concentration 48ppm48ppm. The number of atoms of MgMg in this solution is x×1020x \times10^{20} atoms. The value of xx is . (Nearest Integer) (Given: Atomic mass of MgMg is 24 g mol−124\text{ }g{\text{ }mol}^{- 1},  NA=6.02×1023 mol−1)\left. \ N_{A}= 6.02 \times10^{23}{\text{ }mol}^{- 1} \right)

  4. Question 4

    Hydrocarbons. Asked once: 27 Jan 2024 (same type asked 3 times) See all 3 of this type

    57
    Among the following, total number of meta directing functional groups is −OCH3-OCH_{3}, −NO2-NO_{2}, −CN-CN, −CH3-CH_{3}, −NHCOCH3-NHCOCH_{3}, −COR-COR, −OH-OH, −COOH-COOH, −Cl-Cl

  5. Question 5

    Equilibrium. Asked once: 25 Jul 2022 (same type asked 3 times) See all 3 of this type

    140
    In base vs. Acid titration, at the end point methyl orange is present as

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