1
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Find the rate law for the reaction, $$\mathrm{CHCl}_{3(\mathrm{~g})}+\mathrm{Cl}_{2(\mathrm{~g})} \rightarrow \mathrm{CCl}_{4(\mathrm{~g})}+\mathrm{HCl}_{(\mathrm{g})}$$ if order of reaction with respect to $$\mathrm{CHCl}_{\mathrm{a}(\mathrm{g})}$$ is one and $$\frac{1}{2}$$ with $$\mathrm{Cl}_{2(\mathrm{~g})}$$.

A
Rate $$=\mathrm{k}\left[\mathrm{CHCl}_3\right]\left[\mathrm{Cl}_2\right]^{1 / 2}$$
B
Rate $$=\mathrm{k}\left[\mathrm{CHCl}_3\right]^2\left[\mathrm{Cl}_2\right]^{1 / 2}$$
C
Rate $$=\mathrm{k}\left[\mathrm{CHCl}_3\right]^{3 / 2}\left[\mathrm{Cl}_2\right]$$
D
Rate $$=\mathrm{k}\left[\mathrm{CHCl}_3\right]^{1 / 2}\left[\mathrm{Cl}_2\right]$$
2
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The rate for reaction $$2 \mathrm{~A}+\mathrm{B} \rightarrow$$ product is $$6 \times 10^{-4} \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$$ Calculate the rate constant if the reaction is first order in $$\mathrm{A}$$ and zeroth order in $$\mathrm{B}$$. [Given $$[\mathrm{A}]=[\mathrm{B}]=0.3 \mathrm{M}]$$

A
$$1 \times 10^{-3} \mathrm{~s}^{-1}$$
B
$$2 \times 10^{-3} \mathrm{~s}^{-1}$$
C
$$3 \times 10^{-3} \mathrm{~s}^{-1}$$
D
$$4 \times 10^{-3} \mathrm{~s}^{-1}$$
3
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate half life of first order reaction if rate constant of reaction is $$2.772 \times 10^{-3} \mathrm{~s}^{-1}$$

A
125 s
B
250 s
C
100 s
D
150 s
4
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following statements about rate constant is NOT true?

A
It is independent of concentration.
B
It varies with temperature.
C
It is equal to rate of reaction at unit concentration of reactants.
D
It's unit is independent of order of reaction.
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