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1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Find the number of faradays of electricity required to produce $$45 \mathrm{~g}$$ of $$\mathrm{Al}$$ from molten $$\mathrm{Al}_2 \mathrm{O}_3$$.

(At. mass of $$\mathrm{Al}=27$$ )

A
1 F
B
3 F
C
5 F
D
7 F
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The molar conductivity of $$0.02 \mathrm{~M} \mathrm{~AgI}$$ at $$298 \mathrm{~K}$$ is $$142.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$. What is its conductivity?

A
$$1.42 \times 10^{-3} \Omega^{-1} \mathrm{~cm}^{-1}$$
B
$$2.41 \times 10^{-3} \Omega^{-1} \mathrm{~cm}^{-1}$$
C
$$2.85 \times 10^{-3} \Omega^{-1} \mathrm{~cm}^{-1}$$
D
$$7.11 \times 10^{-3} \Omega^{-1} \mathrm{~cm}^{-1}$$
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following is CORRECT formula for determination of cell constant?

A
$$\frac{l}{\mathrm{a}}=\frac{\mathrm{k}}{\mathrm{R}}$$
B
$$\frac{l}{\mathrm{a}}=\mathrm{k} \cdot \mathrm{R}$$
C
$$\frac{l}{\mathrm{a}}=\frac{\mathrm{R}}{\mathrm{k}}$$
D
$$\frac{l}{\mathrm{a}}=\frac{1}{\mathrm{R}}$$
4
MHT CET 2023 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What happens when solution of an electrolyte is diluted?

A
Both $$\wedge$$ and $$\mathrm{k}$$ increases
B
Both $$\wedge$$ and $$\mathrm{k}$$ decreases
C
$$\wedge$$ increases and $$\mathrm{k}$$ decreases
D
$$\wedge$$ decreases and $$\mathrm{k}$$ increases
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