1
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate rate constant of first order reaction if concentration of reactant decreases by $90 \%$ in 30 minute?

A
$2.16 \times 10^{-2} \mathrm{~min}^{-1}$
B
$3.52 \times 10^{-2} \mathrm{~min}^{-1}$
C
$4.81 \times 10^{-2} \mathrm{~min}^{-1}$
D
$ 7.67 \times 10^{-2} \mathrm{~min}^{-1}$
2
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The reaction $2 \mathrm{~A}+\mathrm{B}+\mathrm{C} \longrightarrow \mathrm{D}+\mathrm{E}$ is found to be first order in A , second order in B and zero order in C . What is the effect of increasing concentration of all reactants twice?

A
Rate of reaction increases 8 times.
B
Rate of reaction increases 24 times.
C
Rate of reaction increases 36 times.
D
Rate of reaction remains unaffected.
3
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify order of following reaction.

$$\mathrm{H}_2 \mathrm{O}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{H}_2 \mathrm{O}_{(\mathrm{l})}+\mathrm{O}_{2(\mathrm{~g})}$$

A
0
B
1
C
1.5
D
2
4
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For the reaction, $\mathrm{N}_{2(\mathrm{g})}+3 \mathrm{H}_{2(\mathrm{g})} \longrightarrow 2 \mathrm{NH}_{3(\mathrm{g})}$ $\mathrm{NH}_3$ is formed at a rate of $0.088 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$. Calculate consumption rate of $\mathrm{N}_{2(\mathrm{g})}$.

A
$0.011 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$
B
$0.022 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$
C
$0.033 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$
D
$0.044 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$
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