PYQ Vault
EbooksTutor

Day 168: JEE Mains Chemistry

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

  1. Question 1

    Chemical Thermodynamics. Asked once: 4 Apr 2024 (same type asked 3 times) See all 3 of this type

    51
    The enthalpy of formation of ethane (C2H6)\left( C_{2}H_{6} \right) from ethylene by addition of hydrogen where the bond energies of C−H,C−C,C=C,H−HC - H, C - C, C = C, H - H are 414 kJ,347 kJ,615 kJ414\text{ }kJ, 347\text{ }kJ, 615\text{ }kJ and 435 kJ435\text{ }kJ respectively is ______ kJkJ.

  2. Question 2

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 4 Apr 2024 (same type asked 3 times) See all 3 of this type

    59
    The number of different chain isomers for C7H16C_{7}H_{16} is ___ .

  3. Question 3

    The d- and f-Block Elements. Asked once: 29 Jun 2022 (same type asked 3 times) See all 3 of this type

    56
    The number of terminal oxygen atoms present in the product B obtained from the following reaction is
    FeCr2O4+Na2CO3+O2→A+Fe2O3+CO2FeCr_{2}O_{4}+Na_{2}CO_{3}+O_{2}\rightarrow A +Fe_{2}O_{3}+CO_{2}
    A+H+→B+H2O+Na+A +H^{+}\rightarrow B +H_{2}O +Na^{+}

  4. Question 4

    Classification of Elements and Periodicity. Asked once: 22 Jan 2025 (same type asked 3 times) See all 3 of this type

    29
    Which of the following electronegativity order is incorrect?

    Tap an option to check your answer.

  5. Question 5

    Coordination Compounds. Asked once: 24 Jan 2025 (same type asked 3 times) See all 3 of this type

    113
    The conditions and consequence that favours the t2 g 3,eg 1t_{2\text{ }g}\ ^{3},e_{g}\ ^{1} configuration in a metal complex are :

    Tap an option to check your answer.