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Day 245: JEE Mains Chemistry

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

  1. Question 1

    Chemical Thermodynamics. Asked once: 30 Jan 2023 (same type asked 4 times) See all 4 of this type

    59
    When 2 litre of ideal gas expands isothermally into vacuum to a total volume of 6 litre, the change in internal energy is ____\_\_\_\_ J. (Nearest integer)

  2. Question 2

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

    51
    A mixture of 1 mole of H2OH_{2}O and 1 mole of COCO is taken in a 10 litre container and heated to 25 K25\text{ }K. At equilibrium 40%40\% of water by mass reacts with carbon monoxide according to the equation: CO(g)+H2O(g)⇌CO2( g)+H2( g)CO(g) +H_{2}O(g) \rightleftharpoons CO_{2}(\text{ }g) +H_{2}(\text{ }g). The equilibrium constant KC×102K_{C}\times10^{2} for the reaction is___ (Nearest integer)

  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 25 Jul 2022 (same type asked 4 times) See all 4 of this type

    59
    The number of sp3sp^{3} hybridised carbons in an acyclic neutral compound with molecular formula C4H5 NC_{4}H_{5}\text{ }N is:

  4. Question 4

    The p-Block Elements. Asked once: 30 Jan 2023 (same type asked 4 times) See all 4 of this type

    139
    Bond dissociation energy of "E-H" bond of the " H2EH_{2}E " hydrides of group 16 elements (given below), follows order. A. O B. SS C. Se D. Te Choose the correct from the options given below:

    Tap an option to check your answer.

  5. Question 5

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 30 Jan 2023 (same type asked 4 times) See all 4 of this type

    131
    Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: can be easily reduced using Zn−Hg/HClZn - Hg/HCl to Reason R:Zn−Hg/HClR:Zn - Hg/HCl is used to reduce carbonyl group to −CH2−-CH_{2}- group. In the light of the above statements, choose the correct answer from the options given below:

    Tap an option to check your answer.