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Day 149: JEE Mains Chemistry

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

  1. Question 1

    Chemical Thermodynamics. Asked once: 1 Feb 2024 (same type asked 4 times) See all 4 of this type

    49
    Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following:

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  2. Question 2

    Equilibrium. Asked once: 11 Apr 2023 (same type asked 4 times) See all 4 of this type

    142
    4.5 moles each of hydrogen and iodine is heated in a sealed ten litre vessel. At equilibrium, 3 moles of HI were found. The equilibrium constant for H2( g)+I2( g)⇌2HI(g)H_{2}(\text{ }g) +I_{2}(\text{ }g) \rightleftharpoons 2HI(g) is .....

  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 24 Jan 2025 (same type asked 4 times) See all 4 of this type

    105
    In the given structure, number of sp and sp2sp^{2} hybridized carbon atoms present respectively are :

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  4. Question 4

    The p-Block Elements. Asked once: 30 Jan 2024 (same type asked 4 times) See all 4 of this type

    125
    Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : H2TeH_{2}Te is more acidic than H2 SH_{2}\text{ }S. Reason R: Bond dissociation enthalpy of H2TeH_{2}Te is lower than H2 SH_{2}\text{ }S. In the light of the above statements. Choose the most appropriate from the options given below.

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  5. Question 5

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 11 Apr 2023 (same type asked 4 times) See all 4 of this type

    122
    Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: can be subjected to Wolff-Kishner reduction to give Reason R: Wolff-Kishner reduction is used to convert In the light of the above statements, choose the correct answer from the options given below :

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