1
WB JEE 2025
MCQ (Single Correct Answer)
+2
-0.5

An egg takes 4.0 minutes to boil at sea level where the boiling point of water is $T_1 K$, where as it takes 8.0 minutes to boil on a mountain top where the boiling point of water is $\mathrm{T}_2 \mathrm{~K}$. The activation energy for the reaction that takes place during the boiling of egg is

A
$0.693 \frac{\mathrm{~T}_1-\mathrm{T}_2}{\mathrm{~T}_1 \mathrm{~T}_2}$
B
$0.693 \frac{\mathrm{~T}_2-\mathrm{T}_1}{\mathrm{~T}_1 \mathrm{~T}_2}$
C
$0.693 \mathrm{R} \frac{\mathrm{T}_1 \mathrm{~T}_2}{\mathrm{~T}_2-\mathrm{T}_1}$
D
$0.693 \mathrm{R} \frac{\mathrm{T}_1 \mathrm{~T}_2}{\mathrm{~T}_1-\mathrm{T}_2}$
2
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25

For a first order reaction with rate constant $$\mathrm{k}$$, the slope of the plot of $$\log$$ (reactant concentration) against time is

A
k/2.303
B
k
C
$$-$$k/2.303
D
$$-$$k
3
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25

Which of the following would give a linear plot?

(k is the rate constant of an elementary reaction and T is temp. in absolute scale)

A
k vs T
B
k vs 1/T
C
ln k vs T
D
ln k vs 1/T
4
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25

For the reaction A + B $$\to$$ C, we have the following data:

Initial concentration of A (in molarity) Initial concentration of B (in molarity) Rate (initial)
(Relevant unit)
1 10 100
1 1 1
10 1 10

The order of the reaction with respect to A and B are

A
Not possible to tell with the given data.
B
First order with respect to both A and B.
C
First order with respect to A and second order with respect to B.
D
Second order with respect to A and first order with respect to B.
WB JEE Subjects