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Day 178: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 27 Jul 2022 (same type asked 3 times) See all 3 of this type

    142
    for a real gas at 25∘C25^{\circ}C temperature and high pressure (99(99 bar) the value of compressibility factor is 2, so the value of Vander Waal's constant ' bb ' should be ×10−2 L mol−1\times10^{- 2}\text{ }L{\text{ }mol}^{- 1} (Nearest integer) (Given R=0.083 LR = 0.083\text{ }L bar K   −1 mol−1)\left. \ \ ^{- 1}{\text{ }mol}^{- 1} \right)

  2. Question 2

    Structure of Atom. Asked once: 28 Jun 2022 (same type asked 3 times) See all 3 of this type

    52
    If the work function of a metal is 6.63×10−19 J6.63 \times10^{- 19}\text{ }J, the maximum wavelength of the photon required to remove a photoelectron from the metal is ____ nm. (Nearest integer) [Given: h=6.63×10−34 J sh = 6.63 \times10^{- 34}\text{ }J\text{ }s, and c=3×108 m s−1c = 3 \times10^{8}\text{ }m{\text{ }s}^{- 1} ]

  3. Question 3

    Some Basic Concepts of Chemistry. Asked once: 25 Jul 2022 (same type asked 3 times) See all 3 of this type

    142
    A sealed flask with a capacity of 2dm32dm^{3} contains 11 g11\text{ }g of propane gas. The flask is so weak that it will burst if the pressure becomes 2MPa2MPa. The minimum temperature at which the flask will burst is  ∘C\ ^{\circ}C. [Nearest integer] (Given: R=8.3 J K−1 mol−1R = 8.3\text{ }J{\text{ }K}^{- 1}{\text{ }mol}^{- 1}. Atomic masses of CC and HH are 12u12u and 1u1u respectively.) (Assume that propane behaves as an ideal gas.)

  4. Question 4

    Equilibrium. Asked once: 8 Apr 2023 (same type asked 3 times) See all 3 of this type

    125
    Given below are two statements:- Statement I: - Methyl orange is a weak acid. Statement II: - The benzenoid form of methyl orange is more intense/deeply coloured than the quinonoid form. In the light of the above statement, choose the most appropriate answer from the options given below

    Tap an option to check your answer.

  5. Question 5

    Equilibrium. Asked once: 29 Jun 2022 (same type asked 3 times) See all 3 of this type

    34
    The solubility of AgClAgCl will be maximum in which of the following?

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