Chemical Kinetics

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Q JEE MAIN 2024

Time required for 99.9% completion of a first order reaction is time the time required for completion of 90% reaction.(nearest integer).

JEE Main Chemistry Easy

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Q JEE MAIN 2024

For a reaction taking place in three steps at same temperature, overall rate constant K=(K_1 〖" " K〗_2)/〖" " K〗_3 . If Ea_1,Ea_2 and Ea_3...

JEE Main Chemistry Medium

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Q JEE MAIN 2024

The rate of first order reaction is $0.04 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$ at 10 minutes and $0.03 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$ at 20 minutes after initiation. Half...

JEE Main Chemistry Medium

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Q JEE MAIN 2025

For the reaction $A \rightarrow B$ the following graph was obtained. The time required (in seconds) for the concentration of $A$ to reduce to $...

JEE Main Chemistry Easy

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Q JEE MAIN 2025

Reactant A converts to product D through the given mechanism (with the net evolution of heat) : $\mathrm{A} \rightarrow \mathrm{B}$ slow; $\Delta H=+\mathrm{ve}$ $...

JEE Main Chemistry Easy

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Q JEE MAIN 2024

Consider the following data for the given reaction $2 \mathrm{HI}_{(\mathrm{g})} \rightarrow \mathrm{H}_{2(\mathrm{~g})}+\mathrm{I}_{2(\mathrm{~g})}$

The order of...

JEE Main Chemistry Easy

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Q JEE MAIN 2025

Drug $X$ becomes ineffective after $50 \%$ decomposition. The original concentration of drug in a bottle was $16 \mathrm{mg} / \mathrm{mL}$ which becomes $...

JEE Main Physics Medium

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Q JEE MAIN 2025

Reaction ${\rm{A}}({\rm{g}}) \to 2\;{\rm{B}}(\;{\rm{g}}) + {\rm{C}}({\rm{g}})$ is a first order reaction. It was started with pure A