PYQ Vault

Day 217: 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 2025 (same type asked 7 times) See all 7 of this type

    46
    In Dumas' method for estimation of nitrogen 1 g of an organic compound gave 150 mL of nitrogen collected at 300 K temperature and 900 mm Hg pressure. The percentage composition of nitrogen in the compound is % (nearest integer). (Aqueous tension at 300 K=15 mmHg300\text{ }K = 15\text{ }mmHg )
  2. Question 2

    Hydrocarbons. Asked once: 1 Feb 2024 (same type asked 7 times) See all 7 of this type

    42
    Which of the following compound will most easily be attacked by an electrophile?

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  3. Question 3

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 31 Jan 2024 (same type asked 7 times) See all 7 of this type

    133
    Identify the name reaction.

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  4. Question 4

    Biomolecules. Asked once: 27 Jun 2022 (same type asked 7 times) See all 7 of this type

    138
    Given below are two statements. Statements I: Maltose has two α\alpha-D-glucose units linked at C1C_{1} and C4C_{4} and is a reducing sugar. Statement II: Maltose has two monosaccharides: α\alpha-D-glucose and β\beta-D-glucose linked at C1C_{1} and C6C_{6} and it is a non-reducing sugar. In the light of the above statements, choose the correct answer from the options given below.

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  5. Question 5

    Haloalkanes and Haloarenes. Asked once: 24 Jan 2025 (same type asked 7 times) See all 7 of this type

    118
    The structure of the major product formed in the following reaction is : →AgCN\overset{AgCN}{\rightarrow} Major product

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