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Day 496: JEE Mains Chemistry

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

  1. Question 1

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 4 Apr 2024

    34
    What will be the decreasing order of basic strength of the following conjugate bases?
     −OH,RO‾,CH3COO‾,Cl‾\ ^{-}OH,R\overline{O},CH_{3}CO\overline{O},C\overline{l}

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  2. Question 2

    Organic Reaction Mechanisms. Asked once: 27 Jul 2022

    50
    Match List I with List II.
    List IList II
    A. Benzene sulphonyl chlorideI. Test for primary amines
    B. Hoffmann bromamideII. Anti Saytzeff
    C. Carbylamine reactionIII. Hinsberg reagent
    D. Hoffmann orientationIV. Known reaction of Isocyanates
    Choose the correct answer from the options given below:

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  3. Question 3

    Solutions. Asked once: 24 Jan 2023

    47
    In the depression of freezing point experiment A. Vapour pressure of the solution is less than that of pure solvent B. Vapour pressure of the solution is more than that of pure solvent C. Only solute molecules solidify at the freezing point D. Only solvent molecules solidify at the freezing point Choose the most appropriate answer from the options given below:

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  4. Question 4

    Some Basic Concepts of Chemistry. Asked once: 2021 Paper 11

    20
    10000 kJ10000\text{ }kJ energy is needed per day and heat of combustion 2700 kJ/mol2700\text{ }kJ/mol, then find the grams of glucose needed?

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  5. Question 5

    Structure of Atom. Asked once: 28 Jul 2022

    143
    If the wavelength for an electron emitted from H−H - atom is 3.3×10−10 m3.3 \times10^{- 10}\text{ }m, then energy absorbed by the electron in its ground state compared to minimum energy required for its escape from the atom, is _____ times. (Nearest integer). [Given: h=6.626×10−34Jsh = 6.626 \times10^{- 34}Js, Mass of electron =9.1×10−31= 9.1 \times10^{- 31} ]