1
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If instantaneous rate of reaction is given as $$ -\frac{1}{\mathrm{a}} \frac{\mathrm{~d}[\mathrm{~A}]}{\mathrm{dt}}=-\frac{1}{\mathrm{~b}} \frac{\mathrm{~d}[\mathrm{~B}]}{\mathrm{dt}}=\frac{1 \mathrm{~d}[\mathrm{C}]}{\mathrm{c}]}=\frac{1 \mathrm{~d}[\mathrm{D}]}{\mathrm{d}]}$$

the reaction is represented as

A
$\mathrm{A}+\mathrm{B} \longrightarrow \mathrm{C}+\mathrm{D}$
B
$\mathrm{aA}+\mathrm{B} \longrightarrow \mathrm{cC}+\mathrm{dD}$
C
$\mathrm{aA}+\mathrm{bB} \longrightarrow \mathrm{cC}+\mathrm{dD}$
D
$\mathrm{aA}+\mathrm{bB} \longrightarrow \mathrm{C}+\mathrm{D}$
2
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Rate law for a reaction is $r=k[A]^2[B]$. If rate constant is $6.25 \mathrm{~mol}^{-2} \mathrm{dm}^6 \mathrm{~s}^{-1}$, what is the rate of reaction when $[\mathrm{A}]=1 \mathrm{~mol} \mathrm{dm}^{-3}$ and $[\mathrm{B}]=0.2 \mathrm{~mol} \mathrm{dm}^{-3}$ ?

A
$1.250 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{sec}^{-1}$
B
$2.125 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{sec}^{-1}$
C
$3.105 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{sec}^{-1}$
D
$2.0 \times 10^{-2} \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{sec}^{-1}$
3
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the time needed to reduce the initial concentration of reactant to $10 \%$ in a first order reaction if its half life time is 10 minutes?

A
15 minute
B
20 minute
C
25 minute
D
33 minute
4
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is an elementary reaction?

A
$\mathrm{C}_2 \mathrm{H}_5 \mathrm{I}_{(\mathrm{g})} \longrightarrow \mathrm{C}_2 \mathrm{H}_{4(\mathrm{~g})}+\mathrm{HI}_{(\mathrm{g})}$
B
$2 \mathrm{NO}_2 \mathrm{Cl}_{(\mathrm{g})} \longrightarrow 2 \mathrm{NO}_{2(\mathrm{z})}+\mathrm{Cl}_{2(\mathrm{z})}$
C
$2 \mathrm{NO}_{2(\mathrm{~g})}+\mathrm{F}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{NO}_2 \mathrm{~F}_{(\mathrm{g})}$
D
$ 2 \mathrm{NO}_{(\mathrm{g})}+\mathrm{Cl}_{2(\mathrm{g})} \longrightarrow 2 \mathrm{NaCl}_{(\mathrm{g})}$
MHT CET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12