JEE Main 2025 (Online) 24th January Morning Shift | Chemical Kinetics and Nuclear Chemistry Question 21 | Chemistry | JEE Main - ExamSIDE.com

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1

JEE Main 2025 (Online) 24th January Morning Shift

MCQ (Single Correct Answer)

+4

-1

For a reaction, $\mathrm{N}_2 \mathrm{O}_{5(\mathrm{~g})} \rightarrow 2 \mathrm{NO}_{2(\mathrm{~g})}+\frac{1}{2} \mathrm{O}_{2(\mathrm{~g})}$ in a constant volume container, no products were present initially. The final pressure of the system when $50 \%$ of reaction gets completed is

A

$5 / 2$ times of initial pressure

B

$7 / 2$ times of initial pressure

C

$7 / 4$ times of initial pressure

D

5 times of initial pressure

2

JEE Main 2025 (Online) 23rd January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Which of the following graphs most appropriately represents a zero order reaction?

A

JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 18 English Option 1

B

JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 18 English Option 2

C

JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 18 English Option 3

D

JEE Main 2025 (Online) 23rd January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 18 English Option 4

3

JEE Main 2025 (Online) 22nd January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Consider the given figure and choose the correct option :

JEE Main 2025 (Online) 22nd January Evening Shift Chemistry - Chemical Kinetics and Nuclear Chemistry Question 20 English

A

Activation energy of both forward and backward reaction is $E_1+E_2$ and reactant is more stable than product.

B

Activation energy of forward reaction is $E_1+E_2$ and product is more stable than reactant.

C

Activation energy of backward reaction is $\mathrm{E}_1$ and product is more stable than reactant.

D

Activation energy of forward reaction is $E_1+E_2$ and product is less stable than reactant.

4

JEE Main 2025 (Online) 22nd January Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Which of the following statement is not true for radioactive decay?

A

Half life is $\ln 2$ times of $\frac{1}{\text { rate constant }}$.

B

Decay constant increases with increase in temperature.

C

Decay constant does not depend upon temperature.

D

Amount of radioactive substance remained after three half lives is $\frac{1}{8}$ th of original amount.

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