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Day 486: JEE Mains Chemistry

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

  1. Question 1

    Structure of Atom. Asked once: 1 Feb 2023

    52
    Electrons in a cathode ray tube have been emitted with a velocity of 1000 m s−11000\text{ }m{\text{ }s}^{- 1}. The number of following statements which is/are true about the emitted radiation is Given: h=6×10−34Js,me=9×10−31 kgh = 6 \times10^{- 34}Js,m_{e}= 9 \times10^{- 31}\text{ }kg. (A) The deBroglie wavelength of the electron emitted is 666.67 nm666.67\text{ }nm. (B) The characteristic of electrons emitted depend upon the material of the electrodes of the cathode ray tube. (C) The cathode rays start from cathode and move towards anode. (D) The nature of the emitted electrons depends on the nature of the gas present in cathode ray tube.

  2. Question 2

    The d- and f-Block Elements. Asked once: 27 Jun 2022

    140
    Match List I with List II Choose the correct answer from the options given below:

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  3. Question 3

    The p-Block Elements. Asked once: 27 Jan 2024

    33
    Element not showing variable oxidation state is:

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  4. Question 4

    Alcohols, Phenols and Ethers. Asked once: 27 Jan 2024

    131
    Major product formed in the following reaction is a mixture of:

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  5. Question 5

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 1 Feb 2024

    39
    Identify AA and BB in the following sequence of reaction

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