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Day 442: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 10 Apr 2023

    138
    Match List-I with List-II.
    List-IList-II
    (A)16 g16\text{ }g of CH4(g)CH_{4}(g)(I)Weighs 28 g28\text{ }g
    (B)1 g1\text{ }g of H2(g)H_{2}(g)(II)60.2×102360.2 \times 10^{23} electrons
    (C)1 mole of N2(g)N_{2}(g)(III)Weighs 32 g32\text{ }g
    (D)0.5 mol of SO2(g)SO_{2}(g)(IV)Occupies 11.4 L11.4\text{ }L volume at STP
    Choose the correct answer from the options given below:

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  2. Question 2

    Structure of Atom. Asked once: 22 Jan 2025

    115
    Given below are two statements : Statement (I) : A spectral line will be observed for a 2px→2py2p_{x}\rightarrow 2p_{y} transition. Statement (II) : 2px2p_{x} and 2py2p_{y} are degenerate orbitals. In the light of the above statements, choose the correct answer from the options given below :

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  3. Question 3

    The d- and f-Block Elements. Asked once: 13 Apr 2023

    50
    The pair of lanthanides in which both elements have high third-ionization energy is:

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  4. Question 4

    The p-Block Elements. Asked once: 9 Apr 2024

    48
    On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed?

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  5. Question 5

    Alcohols, Phenols and Ethers. Asked once: 6 Apr 2024

    144
    The ratio of number of oxygen atoms to bromine atoms in the product QQ is ____ ×10−1\times10^{- 1}.