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Day 450: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 30 Jan 2023

    55
    A 300 mL300\text{ }mL bottle of soft drink has 0.2MCO20.2MCO_{2} dissolved in it. Assuming CO2CO_{2} behaves as an ideal gas, the volume of the dissolved CO2CO_{2} at STP is _____mL. (Nearest integer) Given: At STP, molar volume of an ideal gas is 22.7 L mol−122.7\text{ }L{\text{ }mol}^{- 1}

  2. Question 2

    Structure of Atom. Asked once: 8 Apr 2024

    51
    A hypothetical electromagnetic wave is show below. The frequency of the wave is x×1019 Hzx\times10^{19}\text{ }Hz. x=x = _____ (nearest integer)

  3. Question 3

    The d- and f-Block Elements. Asked once: 12 Apr 2023

    33
    Given below are two statement: one is labelled as Assertion AA and the other is labelled as Reason RR Assertion A: 5f5f electrons can participate in bonding to a far greater extent than 4f4f electrons Reason R: 5f5f orbitals are not as buried as 4f4f orbitals 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: 6 Apr 2024

    135
    Evaluate the following statements related to group 14 elements for their correctness. (A) Covalent radius decreases down the group from CC to PbPb in a regular manner. (B) Electronegativity decreases from CC to PbPb down the group gradually. (C) Maximum covalence of CC is 4 whereas other elements can expand their covalence due to presence of dd orbitals. (D) Heavier elements do not form pπp\pi - pπp\pi bonds. (E) Carbon can exhibit negative oxidation states. Choose the correct answer from the options given below:

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  5. Question 5

    Alcohols, Phenols and Ethers. Asked once: 5 Apr 2024

    130
    Which one of the following reactions is NOT possible?

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