PYQ Vault

Day 248: JEE Mains Chemistry

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

  1. Question 1

    Organic Reaction Mechanisms. Asked once: 1 Feb 2023 (same type asked 4 times) See all 4 of this type

    49
    Match List I with List II
    List I (Test)List II (Functional group / Class of Compound)
    (A)Molisch's Test(I) Peptide
    (B)Biuret Test(II) Carbohydrate
    (C)Carbylamine Test(III) Primary amine
    (D)Schiff's Test(IV) Aldehyde
    Choose the correct answer from the options given below:

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  2. Question 2

    Structure of Atom. Asked once: 27 Jun 2022 (same type asked 4 times) See all 4 of this type

    52
    If the uncertainty in velocity and position of a minute particle in space are, 2.4×10−26( ms−1)2.4 \times10^{- 26}\left( {\text{ }ms}^{- 1} \right) and 10−7( m)10^{- 7}(\text{ }m) respectively. The mass of the particle in gg is (Nearest integer) (Given: h=6.626×10−34Jsh = 6.626 \times10^{- 34}Js )
  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 1 Feb 2023 (same type asked 4 times) See all 4 of this type

    60
    The total number of chiral compound/s from the following is
  4. Question 4

    The p-Block Elements. Asked once: 26 Jun 2022 (same type asked 4 times) See all 4 of this type

    36
    Choose the correct stability order of group 13 elements in their +1-oxidation state.

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  5. Question 5

    Alcohols, Phenols and Ethers. Asked once: 26 Jul 2022 (same type asked 4 times) See all 4 of this type

    42
    The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to:

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