1
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following equation exhibits integrated rate law equation for first order reaction?
A
$\mathrm{k}=\frac{[\mathrm{A}]_0-[\mathrm{A}]_1}{2}$
B
$\quad \mathrm{k}=\frac{2.303}{\mathrm{t}} \times \log \frac{\mathrm{a}}{(\mathrm{a}-\mathrm{x})}$
C
$\quad k=\frac{1}{t} \ln \frac{(a-x)}{a}$
D
$\quad \mathrm{k}=\frac{1}{\mathrm{t}} \times \frac{\mathrm{x}}{\mathrm{a}(\mathrm{a}-\mathrm{x})}$
2
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate activation energy for a reaction if it's rate doubles when temperature is raised from $20^{\circ} \mathrm{C}$ to $35^{\circ} \mathrm{C}\left(\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)$

A
17.336 kJ
B
$\quad 26.900 \mathrm{~kJ}$
C
34.673 kJ
D
44.236 kJ
3
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

If half life of a first order reaction is 10 minutes, find the time required to decrease concentration of reactant from 0.08 M to 0.02 M .

A
10 minutes
B
20 minutes
C
30 minutes
D
40 minutes
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