PYQ Vault
EbooksTutor

Day 216: 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: 30 Jan 2023 (same type asked 7 times) See all 7 of this type

    124
    Match List I with List II:
    List I (Mixture)List II (Separation technique)
    A.
    CHCl3+C6H5NH2CHCl_{3}+C_{6}H_{5}NH_{2}
    		I.Steam distillation
    B.
    C6H14+C5H12C_{6}H_{14}+C_{5}H_{12}
    		II.Differential extraction
    C.
    C6H5NH2+H2OC_{6}H_{5}NH_{2}+H_{2}O
    		III.Distillation
    D.Organic compound in H2OH_{2}OIV.Fractional distillation

    Tap an option to check your answer.

  2. Question 2

    Chemical Thermodynamics. Asked once: 6 Apr 2023 (same type asked 7 times) See all 7 of this type

    147
    Consider the following data: Heat of combustion of H2( g)=−241.8 kJ mol−1H_{2}(\text{ }g) = - 241.8\text{ }kJ{\text{ }mol}^{- 1} Heat of combustion of C(s)=−393.5 kJ mol−1C(s) = - 393.5\text{ }kJ{\text{ }mol}^{- 1} Heat of combustion of C2H5OH(l)=−1234.7 kJ mol−1C_{2}H_{5}OH(l) = - 1234.7\text{ }kJ{\text{ }mol}^{- 1}. The heat of formation of C2H5OH(a)C_{2}H_{5}OH(a) is (−)( - )____ kJmol−1kJmol^{- 1} (Nearest integer)

  3. Question 3

    Biomolecules. Asked once: 23 Jan 2026 S1 (same type asked 7 times) See all 7 of this type

    39
    From the given following (A to D) cyclic structures, those which will not react with Tollen's reagent are : (A) (B) (C) (D)

    Tap an option to check your answer.

  4. Question 4

    Chemical Kinetics. Asked once: 27 Jan 2024 (same type asked 7 times) See all 7 of this type

    143
    Time required for completion of 99.9%99.9\% of a First order reaction is ____ times of half life (t1/2)\left( t_{1/2} \right) of the reaction.

  5. Question 5

    Amines. Asked once: 8 Apr 2024 (same type asked 7 times) See all 7 of this type

    57
    If 279 g279\text{ }g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ______ g. (nearest integer) (consider complete conversion)