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Day 537: JEE Mains Chemistry

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

  1. Question 1

    Chemical Thermodynamics. Asked once: 27 Jul 2022

    54
    The molar heat capacity for an ideal gas at constant pressure is 20.785 J K−1 mol−120.785\text{ }J{\text{ }K}^{- 1}{\text{ }mol}^{- 1}. The change in internal energy is 5000 J5000\text{ }J upon heating it from 300 K300\text{ }K to 500 K500\text{ }K. The number of moles of the gas at constant volume is [Nearest integer] (Given: R=8.314 J K−1 mol−1R = 8.314\text{ }J{\text{ }K}^{- 1}{\text{ }mol}^{- 1} )

  2. Question 2

    Classification of Elements and Periodicity. Asked once: 2021 Paper 22

    44
    Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Metallic character decreases and non-metallic character increases on moving from left to right in a period. Reason (R): It is due to increase in ionisation enthalpy and decrease in electron gain enthalpy, when one moves from left to right in a period. In the light of the above statements, choose the most appropriate answer from the options given below:

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  3. Question 3

    Haloalkanes and Haloarenes. Asked once: 25 Jun 2022

    45
    The major product in the reaction

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  4. Question 4

    Hydrocarbons. Asked once: 30 Jan 2024

    35
    Which of the following molecule/species is most stable?

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  5. Question 5

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 13 Apr 2023

    38
    In the above reaction. Left hand side and right-hand side rings are named as ' AA ' and ' BB ' respectively. They undergo ring expansion. The correct statement for this process is:

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