iCON Education - Chemical Kinetics BITSAT Test

Question 1: Palette 1/7

BITSAT 2025 MCQ

For the reaction,

$ 2 \mathrm{SO}_2+\mathrm{O}_2 \rightleftharpoons 2 \mathrm{SO}_3 $

if the rate of disappearance of $\mathrm{O}_2$ is $2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, determine the rate of appearance of $\mathrm{SO}_3$.

$2 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$

$4 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$

$1 \times 10^{-1} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$

$6 \times 10^{-4} \mathrm{molL}^{-1} \mathrm{~s}^{-1}$

Question 2: Palette 2/7

BITSAT 2025 MCQ

If for a first-order reaction, the frequency factor $A=4 \times 10^{13} \mathrm{~s}^{-1}$ and activation energy $E_a=98.6 \mathrm{~kJ} \mathrm{~mol}^{-1}$, at what temperature will the half-life be 10 minutes?

$330 k$

$300 k$

$330.95 k$

311.49 k

Question 3: Palette 3/7

BITSAT 2024 MCQ

For the reaction $ 2 \mathrm{SO}_{2}+\mathrm{O}_{2} \rightleftharpoons 2 \mathrm{SO}_{3} $, the rate of disappearance of $ \mathrm{O}_{2} $ is $ 2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}{ }^{-1} $ $ \mathrm{s}^{-1} $. The rate appearance of $ \mathrm{SO}_{3} $ is

$ 2 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

$ 4 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

$ 1 \times 10^{-1} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

$ 6 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} $

Question 4: Palette 4/7

BITSAT 2024 MCQ

If for a first order reaction, the value of $ A $ and $ E_{a} $ are $ 4 \times 10^{13} \mathrm{~s}^{-1} $ and $ 98.6 \mathrm{~kJ} \mathrm{~mol}^{-1} $ respectively, then at what temperature will its half life period be 10 minutes?

330 K

300 K

330.95 K

311.15 K

Question 6: Palette 6/7

BITSAT 2020 MCQ

A volume of 50.00 mL of a weak acid of unknown concentration is titrated with 0.10 M solution of NaOH. The equivalence point is reached after 39.30 mL of NaOH solution has been added. At the half equivalence point (19.65 mL) the pH is 4.85. Thus, initial concentration of the acid and its pK_a values are

$[HA]$	$p{K_a}$
0.1 M	4.85

$[HA]$	$p{K_a}$
0.079 M	4.85

$[HA]$	$p{K_a}$
0.1 M	3.70

$[HA]$	$p{K_a}$
0.097 M	2.93

Question 7: Palette 7/7

BITSAT 2020 MCQ

A(g) $\to$ P(g) + Q(g) + R(g),

Follow first order kinetics with a half-life of 69.3 s at 500$^\circ$C. Starting from the gas 'A' an container at 500$^\circ$C and at a pressure of 0.4 atm, the total pressure of the system after 230 s will be

1.15 atm

1.32 atm

1.22 atm

1.12 atm