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Day 45: JEE Mains Chemistry

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

  1. Question 1

    The d- and f-Block Elements. This type asked 4 times: 2021 Paper 20, 2021 Paper 24, 27 Jul 2022, 1 Feb 2023. This one: 1 Feb 2023 See all 4 of this type

    31
    A solution of FeCl3FeCl_{3} when treated with K4[Fe(CN)6]K_{4}\left\lbrack Fe(CN)_{6} \right\rbrack gives a Prussian blue precipitate due to the formation of

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  2. Question 2

    Biomolecules. This type asked 4 times: 2021 Paper 24, 14 Jun 2022, 29 Jul 2022, 30 Jan 2023. This one: 30 Jan 2023 See all 4 of this type

    143
    A short peptide on complete hydrolysis produces 3 moles of glycine (G), two moles of leucine (L) and two moles of valine (V)(V) per mole of peptide. The number of peptide linkages in it are

  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. This type asked 4 times: 2021 Paper 16, 2021 Paper 17, 25 Jun 2022, 25 Jan 2023. This one: 25 Jan 2023 See all 4 of this type

    34
    Which of the following conformations will be the most stable?

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  4. Question 4

    Some Basic Concepts of Chemistry. This type asked 4 times: 14 Jun 2022, 26 Jun 2022, 28 Jun 2022, 29 Jun 2022. This one: 29 Jun 2022 See all 4 of this type

    51
    Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is 0.46 gL−10.46\text{ }gL^{-1} at 257∘C257^{\circ}C and 100 mmHg100\text{ }mmHg. The molar mass of geraniol is ______ (Nearest Integer) [Given R=0.082 L atm K−1 mol−1R = 0.082\text{ }L\text{ }atm\text{ }K^{-1}\text{ }mol^{-1}]

  5. Question 5

    Solutions. This type asked 4 times: 2021 Paper 17, 2021 Paper 23, 2021 Paper 26, 25 Jun 2022. This one: 25 Jun 2022 See all 4 of this type

    123
    Solute AA associates in water. When 0.7 g0.7\text{ }g of solute AA is dissolved in 42.0 g42.0\text{ }g of water, it depresses the freezing point by 0.2∘C0.2^{\circ}C. The percentage association of solute AA in water, is [Given: Molar mass of A=93 g mol−1A = 93\text{ }g{\text{ }mol}^{- 1}. Molal depression constant of water is 1.86 K kg mol−11.86\text{ }K\text{ }kg{\text{ }mol}^{- 1} ]

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