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Day 501: JEE Mains Chemistry

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

  1. Question 1

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 15 Apr 2023

    43
    major product ' AA ' formed in the above reaction is

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  2. Question 2

    Amines. Asked once: 11 Apr 2023

    130
    Compound ' BB ' is

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  3. Question 3

    Chemical Bonding and Molecular Structure. Asked once: 27 Jun 2022

    124
    The correct order of increasing intermolecular hydrogen bond strength is

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  4. Question 4

    Chemical Kinetics. Asked once: 25 Jan 2023

    148
    A first order reaction has the rate constant, =4.6×10−3 s−1= 4.6 \times10^{- 3}{\text{ }s}^{- 1}. The number of correct statement/s from the following is/are Given: log⁡3=0.48\log3 = 0.48 A. Reaction completes in 1000 s1000\text{ }s. B. The reaction has a half-life of 500 s500\text{ }s. C. The time required for 10%10\% completion is 25 times the time required for 90%90\% completion. D. The degree of dissociation is equal to (1−e−kt)\left( 1 -e^{- kt} \right) E. The rate and the rate constant have the same unit

  5. Question 5

    Chemical Thermodynamics. Asked once: 12 Apr 2023

    51
    One mole of an ideal gas at 350 K350\text{ }K is in a 2.0 L2.0\text{ }L vessel of thermally conducting walls, which are in contact with the surroundings. It undergoes isothermal reversible expansion from 2.0 L2.0\text{ }L to 3.0 L3.0\text{ }L. The magnitude of the change in entropy of the surroundings (ΔS)(\Delta S) is___ JK−1JK^{- 1} (Nearest integer) Given: R=8.314 J K−1Mol−1R = 8.314\text{ }J{\text{ }K}^{- 1}Mol^{- 1}.