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Day 40: JEE Mains Chemistry

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

  1. Question 1

    The p-Block Elements. This type asked 4 times: 26 Jun 2022, 30 Jan 2023, 30 Jan 2024, 2 Apr 2025. This one: 2 Apr 2025 See all 4 of this type

    115
    The nature of oxide (TeO2)\left( TeO_{2} \right) and hydride (TeH2)\left( TeH_{2} \right) formed by Te , respectively are :

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  2. Question 2

    Aldehydes, Ketones and Carboxylic Acids. This type asked 4 times: 2021 Paper 2, 30 Jan 2023, 11 Apr 2023, 29 Jan 2025. This one: 29 Jan 2025 See all 4 of this type

    41
    The product (P)(P) formed in the following reaction is →Zn−HgHCl  Product (p)\underset{HCl}{\overset{Zn - Hg}{\rightarrow}}\ \ Product\ (p)

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  3. Question 3

    Chemical Bonding and Molecular Structure. This type asked 4 times: 2021 Paper 14, 29 Jan 2024, 5 Apr 2024, 29 Jan 2025. This one: 29 Jan 2025 See all 4 of this type

    113
    Total number of sigma (σ)(\sigma) and pi (π)(\pi) bonds respectively present in hex-1-en-4-yne are :

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  4. Question 4

    Coordination Compounds. This type asked 4 times: 14 Jun 2022, 1 Feb 2023, 15 Apr 2023, 29 Jan 2025. This one: 29 Jan 2025 See all 4 of this type

    32
    The correct increasing order of stability of the complexes based on Δ∘\Delta_{\circ} value is : (I) [Mn(CN)6]3−\left\lbrack Mn(CN)_{6} \right\rbrack^{3 -} (II) [Co(CN)6]4−\left\lbrack Co(CN)_{6} \right\rbrack^{4 -} (III) [Fe(CN)6]4−\left\lbrack Fe(CN)_{6} \right\rbrack^{4 -} (IV) [Fe(CN)6]3−\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -}

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  5. Question 5

    Electrochemistry. This type asked 4 times: 2021 Paper 18, 27 Jul 2022, 15 Apr 2023, 29 Jan 2025. This one: 29 Jan 2025 See all 4 of this type

    28
    The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is expected to be observed?

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