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Day 146: JEE Mains Chemistry

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

  1. Question 1

    Alcohols, Phenols and Ethers. Asked once: 6 Apr 2024 (same type asked 4 times) See all 4 of this type

    40
    In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is _____.

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  2. Question 2

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 9 Apr 2024 (same type asked 4 times) See all 4 of this type

    122
    The correct stability order of the following resonance structures of CH3−CH=CH−CHOCH_{3}- CH = CH - CHO is

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  3. Question 3

    The p-Block Elements. Asked once: 23 Jan 2025 (same type asked 4 times) See all 4 of this type

    106
    Identify A,BA,B and C in the given below reaction sequence

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  4. Question 4

    Solutions. Asked once: 29 Jan 2025 (same type asked 4 times) See all 4 of this type

    49
    If A2 BA_{2}\text{ }B is 30%30\% ionised in an aqueous solution, then the value of van't Hoff factor (i) is _____\_\_\_\_\_ ×10−1\times10^{- 1}.

  5. Question 5

    Some Basic Concepts of Chemistry. Asked once: 31 Jan 2023 (same type asked 4 times) See all 4 of this type

    58
    The total pressure of a mixture of non-reacting gases X(0.6 g)X(0.6\text{ }g) and Y(0.45 g)Y(0.45\text{ }g) in a vessel is 740 mm740\text{ }mm of HgHg. The partial pressure of the gas XX is mmmm of HgHg. (Nearest Integer) (Given: molar mass X=20X = 20 and Y=45 g mol−1Y = 45\text{ }g{\text{ }mol}^{- 1} )