Chemical Kinetics

CBSE Class 12 · Chemistry · 39 past questions

10 of 39 · show all

1. Q4 2026

   The concentration of the reactant is reduced from 0.6 mol L$^{-1}$ to 0.2 mol L$^{-1}$ in 5 minutes in a…

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2. Q5 2026

   Which of the following curve represents the first order reaction ? (with a figure)

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3. Q8 2026

   For the first order thermal decomposition reaction, following data was obtained…

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4. Q12 2026

   The half-life period of a radioactive element is $1{\cdot}5\times10^{10}$ years. Calculate the time in which…

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5. Q16 2025

   For question number 13 to 16, two statements are given – one labelled as Assertion (A) and the other labelled…

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6. Q17 2025

   The rate constant for a zero order reaction A $\to$ P is 0.0030 mol L$^{-1}$s$^{-1}$. How long will it take…

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7. Q21 2024

   A first order reaction has a rate constant 1.25 × 10⁻³ s⁻¹. How long will 5 g of this reactant take to reduce…

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8. Q25 2024

   A first-order reaction is 25% complete in 40 minutes. Calculate the value of rate constant. In what time will…

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9. Q29 2023

   The slope in the plot of $\ln$[R] vs. time for a first order reaction is

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10. Q39 2022

    A first order reaction is 50% complete in 40 minutes. Calculate the time required for the completion of 90%…

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