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Day 177: JEE Mains Chemistry

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

  1. Question 1

    The d- and f-Block Elements. Asked once: 2021 Paper 7 (same type asked 3 times) See all 3 of this type

    35
    Given below are two statements: Statement I : Potassium permanganate on heating at 573 K573\text{ }K forms potassium manganate. Statement II: Both potassium permanganate and potassium manganate are tetrahedral and paramagnetic in nature. In the light of the above statements, choose the most appropriate answer from the options given below:

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  2. Question 2

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 26 Jun 2022 (same type asked 3 times) See all 3 of this type

    46
    Which will have the highest enol content?

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  3. Question 3

    Amines. Asked once: 2021 Paper 7 (same type asked 3 times) See all 3 of this type

    43
    Which of the following reaction is an example of ammonolysis?

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  4. Question 4

    Classification of Elements and Periodicity. Asked once: 1 Feb 2023 (same type asked 3 times) See all 3 of this type

    139
    Which one of the following sets of ions represents a collection of isoelectronic species? (Given: Atomic Number : F: 9, Cl: 17, Na=11,Mg=12,Al=13, K=19,Ca=20,Sc=21Na = 11,Mg = 12,Al = 13,\text{ }K = 19,Ca = 20,Sc = 21 )

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  5. Question 5

    The p-Block Elements. Asked once: 8 Apr 2023 (same type asked 3 times) See all 3 of this type

    150
    The ratio of sigma and π\pi bonds present in pyrophosphoric acid is___