PYQ Vault
EbooksTutor

Day 59: JEE Mains Chemistry

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

  1. Question 1

    Hydrocarbons. This type asked 3 times: 12 Apr 2023, 23 Jan 2025, 7 Apr 2025. This one: 7 Apr 2025 See all 3 of this type

    115
    The number of optically active products obtained from the complete ozonolysis of the given compound is :

    Tap an option to check your answer.

  2. Question 2

    Aldehydes, Ketones and Carboxylic Acids. This type asked 3 times: 2021 Paper 9, 26 Jul 2022, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type

    41
    An organic compound (X)(X) with molecular formula C3H6OC_{3}H_{6}O is not readily oxidised. On reduction it gives (C3H8O(Y)\left( C_{3}H_{8}O(Y) \right. which reacts with HBr to give a bromide (Z) which is converted to Grignard reagent. This Grinard reagent on reaction with (X) followed by hydrolysis give 2,3-dimethylbutan-2-ol. Compounds (X),(Y)(X),(Y) and (Z)(Z) respectively are :

    Tap an option to check your answer.

  3. Question 3

    Chemical Kinetics. This type asked 3 times: 2021 Paper 25, 15 Apr 2023, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type

    32
    For A2+B2⇌2ABA_{2}+B_{2}\rightleftharpoons 2AB EaE_{a} for forward and backward reaction are 180 and 200 kJ mol−1200\text{ }kJ{\text{ }mol}^{- 1} respectively If catalyst lowers EaE_{a} for both reaction by 100 kJ mol−1100\text{ }kJ{\text{ }mol}^{- 1}. Which of the following statement is correct?

    Tap an option to check your answer.

  4. Question 4

    Some Basic Concepts of Chemistry. This type asked 3 times: 26 Jul 2022, 30 Jan 2023, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type

    48
    Fortification of food with iron is done using FeSO4.7H2O{FeSO}_{4}.7H_{2}O. The mass in grams of the FeSO4.7H2O{FeSO}_{4}.7H_{2}O required to achieve 12 ppm of iron in 150 kg of wheat is (Nearest integer) [Given : Molar mass of Fe, S and O respectively are 56,32 and 16 g mol−116\text{ }g{\text{ }mol}^{- 1} ]

  5. Question 5

    Structure of Atom. This type asked 3 times: 2021 Paper 13, 24 Jan 2023, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type

    113
    Consider the ground state of chromium atom (Z=24)(Z = 24). How many electrons are with Azimuthal quantum number l=1l= 1 and l=2l= 2 respectively?

    Tap an option to check your answer.