PYQ Vault
EbooksTutor

Day 348: JEE Mains Chemistry

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

  1. Question 1

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 5 Apr 2024 (same type asked 8 times) See all 8 of this type

    128
    Match List - I with List - II.
    List - I (Pair of Compounds)List - II (Isomerism)
    (A) n-Propanol and isopropanol(I)Metamerism
    (B) Methoxypropane and ethoxyethane(II)Chain Isomerism
    (C) Propanone and propanal(III)Position Isomerism
    (D) Neopentane and isopentane(IV)Functional Isomerism

    Tap an option to check your answer.

  2. Question 2

    Structure of Atom. Asked once: 31 Jan 2023 (same type asked 8 times) See all 8 of this type

    50
    Which transition in the hydrogen spectrum would have the same wavelength as the Balmer type transition from n=4n = 4 to n=2n = 2 of He+He^{+}spectrum

    Tap an option to check your answer.

  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 23 Jan 2025 (same type asked 8 times) See all 8 of this type

    47
    During "S" estimation, 160 mg of an organic compound gives 466 mg of barium sulphate. The percentage of Sulphur in the given compound is____\_\_\_\_ %.(Given molar mass in gmol−1gmol^{- 1} of Ba:137, S:32Ba:137,\text{ }S:32, 0:16)0:16)

  4. Question 4

    Some Basic Concepts of Chemistry. Asked once: 13 Apr 2023 (same type asked 8 times) See all 8 of this type

    142
    1 g1\text{ }g of a carbonate (M2CO3)\left( M_{2}CO_{3} \right) on treatment with excess HClHCl produces 0.01 mol0.01\text{ }mol of CO2CO_{2} The molar mass of M2CO3M_{2}CO_{3} is____ g mol−1mol^{- 1}. (Nearest integer)

  5. Question 5

    Some Basic Concepts of Chemistry. Asked once: 2021 Paper 20 (same type asked 8 times) See all 8 of this type

    60
    When 10 mL10\text{ }mL of an aqueous solution of KMnO4KMnO_{4} was titrated in acidic medium, equal volume of 0.1 MM of an aqueous solution of ferrous sulphate was required for complete discharge of colour. The strength of KMnO4KMnO_{4} in grams per litre is ×10−2\times10^{- 2}. (Nearest integer) [Atomic mass of K=39,Mn=55,O=16K = 39,Mn = 55,O = 16 ]