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Day 261: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 29 Jan 2023 (same type asked 3 times) See all 3 of this type

    136
    When a hydrocarbon A undergoes combustion in the presence of air, it requires 9.5 equivalents of oxygen and produces 3 equivalents of water. What is the molecular formula of A?

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  2. Question 2

    Electrochemistry. Asked once: 31 Jan 2023 (same type asked 3 times) See all 3 of this type

    49
    Which one of the following statements is correct for electrolysis of brine solution?

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  3. Question 3

    Electrochemistry. Asked once: 27 Jun 2022 (same type asked 3 times) See all 3 of this type

    55
    The limiting molar conductivities of NaI,NaNO3NaI,NaNO_{3} and AgNO3AgNO_{3} are 12.7, 12.0 and 13.3 mS m2 mol−113.3\ mS\ m^{2}\ mol^{-1}, respectively (all at 25∘C25^{\circ}C ). The limiting molar conductivity of AgI at this temperature is ____ mS m2 mol−1\_\_\_\_\ mS\ m^{2}\ mol^{-1}

  4. Question 4

    Equilibrium. Asked once: 25 Jan 2023 (same type asked 3 times) See all 3 of this type

    121
    When the hydrogen ion concentration [H+]\left\lbrack H^{+} \right\rbrackchanges by a factor of 1000, the value of pHpH of the solution

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  5. Question 5

    Hydrocarbons. Asked once: 23 Jan 2025 (same type asked 3 times) See all 3 of this type

    111
    Match List - I (Isomers of C10H14C_{10}H_{14}) with List - II (Ozonolysis product). The figure shows the table row by row: isomer (A) then product (I), isomer (B) then product (II), isomer (C) then product (III), isomer (D) then product (IV). Choose the correct answer from the options given below:

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