1
JEE Main 2025 (Online) 23rd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
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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
2
JEE Main 2025 (Online) 22nd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
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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.
3
JEE Main 2025 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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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.
4
JEE Main 2024 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For a reaction $$A \xrightarrow{\mathrm{K}_1} \mathrm{~B} \xrightarrow{\mathrm{K}_2} \mathrm{C}$$ If the rate of formation of B is set to be zero then the concentration of B is given by :

A
$$(\mathrm{K}_1-\mathrm{K}_2)[\mathrm{A}]$$
B
$$(\mathrm{K}_1+\mathrm{K}_2)[\mathrm{A}]$$
C
$$\mathrm{K}_1 \mathrm{K}_2[\mathrm{~A}]$$
D
$$(\mathrm{K}_1 / \mathrm{K}_2)[\mathrm{A}]$$
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