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Day 119: JEE Mains Chemistry

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

  1. Question 1

    Biomolecules. Asked once: 28 Jan 2026 S2 (same type asked 7 times) See all 7 of this type

    36
    Structures of four disaccharides are given below. Among the given disaccharides, the non-reducing sugar is :

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  2. Question 2

    Chemical Kinetics. Asked once: 6 Apr 2024 (same type asked 7 times) See all 7 of this type

    53
    Time required for 99.9%99.9\% completion of a first order reaction is______ time the time required for completion of 90%90\% reaction. (nearest integer).

  3. Question 3

    Amines. Asked once: 22 Jan 2026 S2 (same type asked 7 times) See all 7 of this type

    49
    The mass of benzanilide obtained from the benzoylation reaction of 5.8 g of aniline, if yield of product is 82%82\%, is ____\_\_\_\_ g (nearest integer). (Given molar mass in gmol−1H:1,C:12, N:14g{mol}^{- 1}H:1,C:12,\text{ }N:14, O:16)

  4. Question 4

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 7 Apr 2025 (same type asked 7 times) See all 7 of this type

    122
    In Dumas' method 292 mg of an organic compound released 50 mL of nitrogen gas (N2)\left( N_{2} \right) at 300 K temperature and 715 mm Hg pressure. The percentage composition of ' N ' in the organic compound is % (Nearest integer) (Aqueous tension at 300 K=15 mmHg300\text{ }K = 15\text{ }mmHg )

  5. Question 5

    Hydrocarbons. Asked once: 6 Apr 2024 (same type asked 7 times) See all 7 of this type

    121
    The correct arrangement for decreasing order of electrophilic substitution for above compounds

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