1
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For the reaction,

$$\mathrm{CH}_3 \mathrm{Br}(a q)+\mathrm{OH}^{-}(a q) \longrightarrow \mathrm{CH}_3 \mathrm{OH}(a q)+\mathrm{Br}^{-}(a q),$$

The rate law is rate $$=k\left[\mathrm{CH}_3 \mathrm{Br}\right]\left[\mathrm{OH}^{-}\right]$$. What is change in rate of reaction if concentration of both reactants is doubled?

A
Rate increases by factor 2
B
Rate increases by factor 4
C
Rate remains same
D
Rate decreases by factor 2
2
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For the reaction, $$2 A+2 B \longrightarrow 2 C+D$$, the rate law is expressed as rate $$=k[A]^2[B]$$. Calculate the rate constant if rate of reaction is $$0.24 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~s}^{-1}$$.

[[$$A$$]$$=0.5 \mathrm{M}$$ and $$[B]=0.2 \mathrm{M}$$]

A
$$4.8 \mathrm{~mol}^{-2} \mathrm{~dm}^6 \mathrm{~s}^{-1}$$
B
$$9.6 \mathrm{~mol}^{-2} \mathrm{~dm}^6 \mathrm{~s}^{-1}$$
C
$$12.1 \mathrm{~mol}^{-2} \mathrm{~dm}^6 \mathrm{~s}^{-1}$$
D
$$14.4 \mathrm{~mol}^{-2} \mathrm{~dm}^6 \mathrm{~s}^{-1}$$
3
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the molar conductivity of $$0.005 \mathrm{~M} \mathrm{~NaI}$$ solution if it's conductivity is $$6.065 \times 10^{-4} \Omega^{-1} \mathrm{~cm}^{-1} \text { ? }$$

A
$$121.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
B
$$115.1 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
C
$$126.5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
D
$$131.2 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$
4
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is not a disaccharide?

A
Sucrose
B
Maltose
C
Lactose
D
Raffinose
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