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JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
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JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 46 English
'A' formed in the above reaction is
A
JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 46 English Option 1
B
JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 46 English Option 2
C
JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 46 English Option 3
D
JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Alcohols, Phenols and Ethers Question 46 English Option 4
2
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
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The product formed in the following multistep reaction is :

JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Hydrocarbons Question 49 English
A
JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Hydrocarbons Question 49 English Option 1
B
JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Hydrocarbons Question 49 English Option 2
C
$\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{OH}$
D
JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Hydrocarbons Question 49 English Option 4
3
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
+4
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Decreasing order of reactivity towards electrophilic substitution for the following compounds is :

JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Compounds Containing Nitrogen Question 65 English
A
$ \mathrm{a}>\mathrm{d}>\mathrm{e}>\mathrm{b}>\mathrm{c}$
B
$\mathrm{d}>\mathrm{a}>\mathrm{e}>\mathrm{c}>$ b
C
$\mathrm{c}>\mathrm{b}>\mathrm{a}>\mathrm{d}>\mathrm{e}$
D
$\mathrm{e}>\mathrm{d}>\mathrm{a}>\mathrm{b}>\mathrm{c}$
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JEE Main 2023 (Online) 15th April Morning Shift
Numerical
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For a reversible reaction $\mathrm{A} \rightleftharpoons \mathrm{B}$, the $\Delta \mathrm{H}_{\text{forward reaction}} = 20 \mathrm{~kJ} \mathrm{~mol}^{-1}$. The activation energy of the uncatalysed forward reaction is $300 \mathrm{~kJ} \mathrm{~mol}^{-1}$. When the reaction is catalysed keeping the reactant concentration same, the rate of the catalysed forward reaction at $27^{\circ} \mathrm{C}$ is found to be same as that of the uncatalysed reaction at $327^{\circ} \mathrm{C}$.

The activation energy of the catalysed backward reaction is ___________ $\mathrm{kJ}~ \mathrm{mol}^{-1}$.
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