1
MHT CET 2023 9th May Morning Shift
+1
-0

The rate for reaction $$\mathrm{A}+\mathrm{B} \rightarrow$$ product, is $$1.8 \times 10^{-2} \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$$. Calculate the rate constant if the reaction is second order in $$\mathrm{A}$$ and first order in $$\mathrm{B}$$. ($$[\mathrm{A}]=0.2 \mathrm{M} ;[\mathrm{B}]=0.1 \mathrm{M}$$)

A
$$9.0 \mathrm{~mol}^{-2}~\mathrm{dm}^6 \mathrm{~s}^{-1}$$
B
$$18.0 \mathrm{~mol}^{-2} ~\mathrm{dm}^6 \mathrm{~s}^{-1}$$
C
$$4.5 \mathrm{~mol}^{-2} ~\mathrm{dm}^6 \mathrm{~s}^{-1}$$
D
$$16.0 \mathrm{~mol}^{-2} ~\mathrm{dm}^6 \mathrm{~s}^{-1}$$
2
MHT CET 2021 21th September Evening Shift
+1
-0

For a first order reaction, intercept of the graph between $$\mathrm{\log\frac{[A]_o}{[A]_t}}$$(Y-axis) and conc. (X-axis) is equal to

A
$$\mathrm{-\frac{k}{2.303~K}}$$
B
$$\mathrm{-\log[A]_o}$$
C
zero
D
$$\mathrm{\frac{2.303}{K}}$$
3
MHT CET 2021 21th September Evening Shift
+1
-0

What is the half-life of a first order reaction if time required to decrease concentration of reactant from 1.0 M to 0.25 M is 10 hour?

A
12 hour
B
4 hour
C
5 hour
D
10 hour
4
MHT CET 2021 21th September Evening Shift
+1
-0

What is the rate of disappearance of B in following reaction? $$2 \mathrm{A}+\mathrm{B} \rightarrow 3 \mathrm{C}$$, if rate of appearance of $$\mathrm{C}$$ is $$1.3 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$.

A
$$4.33 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
B
$$8.6 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
C
$$2.6 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
D
$$5.2 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$$
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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