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Day 438: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 12 Apr 2023

    58
    At 600 K600\text{ }K, the root mean square (rms) speed of gas XX (molar mass =40= 40 ) is equal to the most probable speed of gas YY at 90 K90\text{ }K. The molar mass of the gas YY is ___g mol−1g\ mol^{- 1}. (Nearest integer)

  2. Question 2

    Structure of Atom. Asked once: 23 Jan 2025

    109
    Given below are two statements: Statement (I) : For a given shell, the total number of allowed orbitals is given by n2n^{2}. Statement (II) : For any subshell, the spatial orientation of the orbitals is given by −l-l to +l+l values including zero. In the light of the above statements, choose the correct answer from the options given below:

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  3. Question 3

    The d- and f-Block Elements. Asked once: 29 Jan 2024

    135
    Which of the following statements are correct about Zn,CdZn,Cd and HgHg? (A) They exhibit high enthalpy of atomization as the d-subshell is full. (B) ZnZn and CdCd do not show variable oxidation state while HgHg shows +I+ I and +II+ II. (C) Compounds of Zn,CdZn,Cd and HgHg are paramagnetic in nature. (D) Zn,CdZn,Cd and HgHg are called soft metals. Choose the most appropriate from the options given below:

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  4. Question 4

    The p-Block Elements. Asked once: 9 Apr 2024

    141
    Number of oxygen atoms present in chemical formula of fuming sulphuric acid is ____

  5. Question 5

    Alcohols, Phenols and Ethers. Asked once: 6 Apr 2024

    129
    The major products formed: AA and BB respectively are:

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