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Day 10: JEE Mains Chemistry

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

  1. Question 1

    Organic Chemistry - Some Basic Principles and Techniques. This type asked 7 times: 14 Jun 2022, 28 Jul 2022, 2 Apr 2025, 3 Apr 2025, 4 Apr 2025, 7 Apr 2025, 24 Jan 2026 S1. This one: 24 Jan 2026 S1 See all 7 of this type

    49
    In Dumas method for estimation of nitrogen, 0.50 g of an organic compound gave 70 mL of nitrogen collected at 300 K and 715 mm pressure. The percentage of nitrogen in the organic compound is ____\_\_\_\_ % (Aqueous tension at 300 K is 15 mm ).

  2. Question 2

    Hydrocarbons. This type asked 7 times: 28 Jul 2022, 11 Apr 2023, 15 Apr 2023, 31 Jan 2024, 1 Feb 2024, 6 Apr 2024, 23 Jan 2026 S1. This one: 23 Jan 2026 S1 See all 7 of this type

    37
    Consider the following compounds Arrange these compounds in the increasing order of reactivity with nitrating mixture.

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  3. Question 3

    Aldehydes, Ketones and Carboxylic Acids. This type asked 7 times: 26 Jun 2022, 27 Jul 2022, 30 Jan 2024, 31 Jan 2024, 22 Jan 2025, 24 Jan 2025, 21 Jan 2026 S2. This one: 21 Jan 2026 S2 See all 7 of this type

    32
    Match List-I with List-II.
    List-I ReagentsList-II Reaction Name (Involving aldehydes)
    (A)H2, Pd−BaSO4H_{2},\ Pd - {BaSO}_{4}(I)Etard Reaction
    (B)SnCl2, HCl{SnCl}_{2},\ HCl(II)Rosenmund Reduction
    (C)CrO2Cl2, CS2{CrO}_{2}{Cl}_{2},\ {CS}_{2}(III)Gattermann-Koch Reaction
    (D)CO, HClCO,\ HCl, anhyd. AlCl3{AlCl}_{3}(IV)Stephen Reaction
    Choose the correct answer from the options given below:

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  4. Question 4

    Biomolecules. This type asked 7 times: 2021 Paper 3, 2021 Paper 19, 2021 Paper 22, 2021 Paper 26, 27 Jun 2022, 25 Jul 2022, 28 Jan 2025. This one: 28 Jan 2025 See all 7 of this type

    103
    Match List-I with List-II.
    List-I (Saccharides)List-II (Glycosidic linkages found)
    (A)Sucrose(I)α1−4\alpha 1-4
    (B)Maltose(II)α1−4\alpha 1-4 and α1−6\alpha 1-6
    (C)Lactose(III)α1−β2\alpha 1-\beta 2
    (D)Amylopectin(IV)β1−4\beta 1-4
    Choose the correct answer from the options given below:

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  5. Question 5

    Haloalkanes and Haloarenes. This type asked 7 times: 2021 Paper 8, 2021 Paper 10, 13 Apr 2023, 29 Jan 2024, 1 Feb 2024, 24 Jan 2025, 28 Jan 2025. This one: 28 Jan 2025 See all 7 of this type

    109
    The product B formed in the following reaction sequence is : →HCl (A)  (Major) →AgCN (B)  (Major) \overset{HCl}{\rightarrow}\underset{\text{~(Major)~}}{\text{~(A)~}}\overset{AgCN}{\rightarrow}\underset{\text{~(Major)~}}{\text{~(B)~}}

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