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QJEE MAIN 2021
The rate constant of a reaction increases by five times on increase in temperature from $27^{\circ} \mathrm{C}$ to $52^{\circ} \mathrm{C}$. The value of activation energy...
JEE MainChemistryEasy
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QJEE-Main-2021_
For a certain first order reaction 32\% of the reactant is left after 570 s . The rate constant of this reaction is $\_\_\_\_$ $...
JEE MainChemistryEasy
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QJEE Main 2019
The following results were obtained during kinetic studies of the reaction ; $2 \mathrm{~A}+\mathrm{B} \rightarrow$ Products
A and B decompose via first order kinetics with half-lives 54.0 min and 18.0 min respectively. Starting from an equimolar non reactive mixture of A...
JEE MainChemistryMedium
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Q JEE MAIN 2021
Sucrose hydrolyses in acid solution into glucose and fructose following first order rate law with a half-life of 3.33 h at $25^{\circ} \mathrm{C}$. After 9...
JEE MainChemistryMedium
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QJEE MAIN 2021
$2 \mathrm{NO}(\mathrm{g})+\mathrm{Cl}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NOCl}(\mathrm{s})$ This reaction was studied at $-10^{\circ} \mathrm{C}$ and the following data was obtained
If the activation energy of a reaction is $80.9 \mathrm{~kJ} \mathrm{~mol}^{-1}$, the fraction of molecules at 700 K , having enough energy to react to...
JEE MainChemistryEasy
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QJEE MAIN
A ball weighing 10 g is moving with a velocity of $90 \mathrm{~ms}^{-1}$. If the uncertainty in its velocity is $5 \%$, then the uncertainty...
JEE MainChemistryEasy
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QJEE MAIN 2021
The decomposition of formic acid on gold surface follows first order kinetics. If the rate constant at 300 K is $1.0 \times 10^{-3} \mathrm{~s}^{-1}$ and...
JEE MainChemistryEasy
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QJEE MAIN 2021
Gaseous cyclobutene isomerizes to butadiene in a first order process which has a ' k ' value of $3.3 \times 10^{-4} \mathrm{~S}^{-1}$ at $153^{\circ} \mathrm{C}$....
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