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Day 247: JEE Mains Chemistry

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

  1. Question 1

    Alcohols, Phenols and Ethers. Asked once: 1 Feb 2024 (same type asked 4 times) See all 4 of this type

    131
    Which among the following has highest boiling point?

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  2. Question 2

    The d- and f-Block Elements. Asked once: 14 Jun 2022 (same type asked 4 times) See all 4 of this type

    56
    The difference in oxidation state of chromium in chromate and dichromate salts is

  3. Question 3

    Electrochemistry. Asked once: 29 Jan 2024 (same type asked 4 times) See all 4 of this type

    52
    The mass of zinc produced by the electrolysis of zinc sulphate solution with a steady current of 0.015 A0.015\text{ }A for 15 minutes is _____ ×10−4 g\times10^{- 4}\text{ }g. (Atomic mass of zinc =65.4amu= 65.4amu )

  4. Question 4

    Some Basic Concepts of Chemistry. Asked once: 26 Jul 2022 (same type asked 4 times) See all 4 of this type

    55
    When 800 mL800\text{ }mL of 0.5M0.5M nitric acid is heated in a beaker, its volume is reduced to half and 11.5 g11.5\text{ }g of nitric acid is evaporated. The molarity of the remaining nitric acid solution is x×10−2Mx \times10^{- 2}M. (Nearest Integer) (Molar mass of nitric acid is 63 g mol−163\text{ }g{\text{ }mol}^{- 1} )

  5. Question 5

    The p-Block Elements. Asked once: 31 Jan 2024 (same type asked 4 times) See all 4 of this type

    124
    Given below are two statements: Statement I:S8I:S_{8} solid undergoes disproportionation reaction under alkaline conditions to form S2−S^{2 -} and S2O32−S_{2}O_{3}^{2 -} Statement II: ClO4−ClO_{4}^{-}can undergo disproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below:

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