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Day 458: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 24 Jan 2023

    142
    The number of units, which are used to express concentration of solutions from the following is___ Mass percent, Mole, Mole fraction, Molarity, ppm, Molality

  2. Question 2

    Structure of Atom. Asked once: 1 Feb 2024

    36
    According to the wave-particle duality of matter by de-Broglie, which of the following graph plot presents most appropriate relationship between wavelength of electron ( λ\lambda ) and momentum of electron (p)(p) ?

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  3. Question 3

    The d- and f-Block Elements. Asked once: 31 Jan 2023

    122
    Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The first ionization enthalpy of 3 d3\text{ }d series elements is more than that of group 2 metals Reason (R): In 3d series of elements successive filling of d-orbitals takes place. In the light of the above statements, choose the correct answer from the options given below:

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  4. Question 4

    The p-Block Elements. Asked once: 1 Feb 2024

    137
    Given below are two statements: Statement (I): SiO2SiO_{2} and GeO2GeO_{2} are acidic while SnOSnO and PbOPbO are amphoteric in nature. Statement (II): Allotropic forms of carbon are due to property of catenation and pπ−dπp\pi - d\pi bond formation. In the light of the above statements, choose the most appropriate answer from the options given below:

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  5. Question 5

    Alcohols, Phenols and Ethers. Asked once: 4 Apr 2024

    126
    Common name of Benzene-1, 2-diol is

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