PYQ Vault

Day 419: JEE Mains Chemistry

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

  1. Question 1

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 24 Jan 2026 S1

    43
    Consider the following two reactions A and B . (A) (B) Numerical value of [molar mass of x+x + molar mass of y ] is ____\_\_\_\_.

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  2. Question 2

    Amines. Asked once: 23 Jan 2026 S2

    45
    A student has been given a compound " x " of molecular formula C6H7NC_{6}H_{7}N. ' x ' is sparingly soluble in water. However, on addition of dilute mineral acid , ' x ' becomes soluble in water. ' x ' when treated with CHCl3CHCl_{3} and KOH (alc.) ' y ' is produced. ' y ' has a specific unpleasant smell. On treatment with benzenesulphonyl chloride, ' x ' gives a compound ' z ' which is soluble in alkali. The number of different "H" atoms present in ' zz ' is:-

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  3. Question 3

    Biomolecules. Asked once: 9 Apr 2024

    129
    The incorrect statement about Glucose is:

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  4. Question 4

    Chemical Bonding and Molecular Structure. Asked once: 2 Apr 2025

    35
    Among SO2,NF3,NH3,XeF2,ClF3SO_{2},NF_{3},NH_{3},XeF_{2},ClF_{3} and SF4SF_{4}, the hybridization of the molecule with non-zero dipole moment and highest number of lone-pairs of electrons on the central atom is.

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  5. Question 5

    Chemical Kinetics. Asked once: 23 Jan 2026 S1

    46
    For the thermal decomposition of reaction AB(g)AB(g), the following is constructed. The half life of the reaction is ' x ' min. x=x = ____\_\_\_\_ min. (Nearest integer)