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Day 19: JEE Mains Chemistry

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

  1. Question 1

    Structure of Atom. This type asked 5 times: 27 Jul 2022, 29 Jul 2022, 31 Jan 2023, 9 Apr 2024, 5 Apr 2026 S1. This one: 5 Apr 2026 S1 See all 5 of this type

    27
    Arrange the following atomic orbitals of multi electron atoms in order of increasing energy. (A) n=3,l=2, m=+1n = 3,\mathcal{l} = 2,\text{ }m = + 1 (B) n=4,l=0,m=0n = 4,\mathcal{l} = 0,m = 0 (C) n=6,l=1, m=0n = 6,\mathcal{l} = 1,\text{ }m = 0 (D) n=5,l=1, m=+1n = 5,\mathcal{l} = 1,\text{ }m = + 1 (E) n=2,l=1, m=+1n = 2,\mathcal{l} = 1,\text{ }m = + 1 Choose the correct answer from the options given below :

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  2. Question 2

    The d- and f-Block Elements. This type asked 5 times: 2021 Paper 20, 31 Jan 2023, 27 Jan 2024, 9 Apr 2024, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 5 of this type

    34
    Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number, Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72] (A) (Eu and Gd) (B) (Dy and Ho) (C) ( Yb and Hf ) (D) ( Lu and Tm) Choose the correct answer from the options given below:

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  3. Question 3

    The d- and f-Block Elements. This type asked 5 times: 2021 Paper 17, 2021 Paper 23, 25 Jan 2023, 30 Jan 2023, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 5 of this type

    44
    Among Fe3+,Pb2+,Cu2+Fe^{3 +},Pb^{2 +},Cu^{2 +} and Mn2+Mn^{2 +}, identify the one that gets precipitated out while passing H2 SH_{2}\text{ }S in presence of NH4OHNH_{4}OH as group reagent. The highest possible oxidation state of the corresponding metal is

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  4. Question 4

    Chemical Bonding and Molecular Structure. This type asked 5 times: 25 Jan 2023, 10 Apr 2023, 5 Apr 2024, 29 Jan 2025, 4 Apr 2026 S1. This one: 4 Apr 2026 S1 See all 5 of this type

    46
    According to Lewis theory, the total number of σ\sigma bond-pairs and lone pair of electrons around the central atom of XeO64−{XeO}_{6}^{4 -} ion is ____\_\_\_\_ .

  5. Question 5

    Structure of Atom. This type asked 5 times: 2021 Paper 11, 2021 Paper 23, 29 Jan 2024, 31 Jan 2024, 4 Apr 2026 S1. This one: 4 Apr 2026 S1 See all 5 of this type

    28
    Which of the following is correct set of 4 quantum number of 19th19^{\text{th}} electron in Chromium (Atomic number =24= 24 ) in accordance with Aufbau principle?

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