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Day 518: JEE Mains Chemistry

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

  1. Question 1

    Hydrocarbons. Asked once: 6 Apr 2024

    56
    The major product of the following reaction is PP. Number of oxygen atoms present in product ' PP ' is _____ (nearest integer).

  2. Question 2

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 30 Jan 2024

    149
    2-chlorobutane +Cl2→C4H8Cl2+Cl_{2}\rightarrow C_{4}H_{8}Cl_{2} (isomers) Total number of optically active isomers shown by C4H8Cl2C_{4}H_{8}Cl_{2}, obtained in the above reaction is ____

  3. Question 3

    Organic Reaction Mechanisms. Asked once: 2021 Paper 20

    31
    In the following sequence of reactions, the final product DD is:

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  4. Question 4

    Structure of Atom. Asked once: 2021 Paper 21

    57
    The number of photons emitted by a monochromatic (single frequency) infrared range finder of power 1 mW1\text{ }mW and wavelength of 1000 nm1000\text{ }nm, in 0.1 second is x×1013x \times 10^{13}. The value of xx is (Nearest integer) (h=6.63×10−34 Js,c=3.00×108 ms−1)\left( h = 6.63 \times 10^{- 34}\ Js, c = 3.00 \times 10^{8}\text{ }ms^{- 1} \right)

  5. Question 5

    The d- and f-Block Elements. Asked once: 2021 Paper 5

    31
    Given below are two statement: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Size of Bk3+Bk^{3 +} ion is less than Np3+Np^{3 +} ion. Reason RR : The above is a consequence of the lanthanoid contraction. In the light of the above statements, choose the correct answer from the options given below:

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