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Day 266: JEE Mains Chemistry

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

  1. Question 1

    The d- and f-Block Elements. Asked once: 26 Jul 2022 (same type asked 3 times) See all 3 of this type

    147
    The spin-only magnetic moment value of the compound with strongest oxidizing ability among MnF4,MnF3MnF_{4},MnF_{3} and MnF2MnF_{2} is ____ B.M. [nearest integer]

  2. Question 2

    Biomolecules. Asked once: 2021 Paper 20 (same type asked 3 times) See all 3 of this type

    45
    Out of following isomeric forms of uracil, which one is present in RNA?

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  3. Question 3

    Chemical Kinetics. Asked once: 29 Jan 2024 (same type asked 3 times) See all 3 of this type

    53
    For a reaction taking place in three steps at same temperature, overall rate constant K=K1 K2 K3K =\frac{K_{1}{\text{ }K}_{2}}{{\text{ }K}_{3}}. If Ea1,Ea2Ea_{1},Ea_{2} and Ea3Ea_{3} are 40,50 and 60 kJ/mol60\text{ }kJ/mol respectively, the overall Ea is ____ kJ/molkJ/mol.

  4. Question 4

    Hydrocarbons. Asked once: 1 Feb 2024 (same type asked 3 times) See all 3 of this type

    128
    The set of meta directing functional groups from the following sets is:

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  5. Question 5

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 28 Jun 2022 (same type asked 3 times) See all 3 of this type

    136
    Iso butyraldehyde on reaction with formaldehyde and K2CO3K_{2}CO_{3} gives compound 'A'. Compound ' AA ' reacts with KCNKCN and yields compound ' BB ', which on hydrolysis gives a stable compound ' CC '. The compound ' CC ' is:

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