1
KCET 2024
MCQ (Single Correct Answer)
+1
-0

The value of ' $A$ ' in the equation $\lambda_{\mathrm{m}}=\lambda_{\mathrm{m}}^{\circ}-A \sqrt{C}$ is same for the pair

A
NaCl and $\mathrm{CaCl}_2$
B
$\mathrm{CaCl}_2$ and $\mathrm{MgSO}_4$
C
NaCl and KBr
D
$\mathrm{MgCl}_2$ and NaCl
2
KCET 2023
MCQ (Single Correct Answer)
+1
-0

The resistance of $$0.1 \mathrm{~M}$$ weak acid $$\mathrm{H} A$$ in a conductivity cell is $$2 \times 10^3 \mathrm{~Ohm}$$. The cell constant of the cell is $$0.78 ~\mathrm{C} \mathrm{~m}^{-1}$$ and $$\lambda_{\mathrm{m}}^{\circ}$$ of acid $$\mathrm{H} A$$ is $$390 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$. The $$\mathrm{pH}$$ of the solution is

A
3.3
B
4.2
C
5
D
3
3
KCET 2023
MCQ (Single Correct Answer)
+1
-0

During the electrolysis of brine, by using inert electrodes,

A
$$\mathrm{O}_2$$ liberates at anode
B
$$\mathrm{H}_2$$ liberates at anode
C
Na deposits on cathode
D
$$\mathrm{Cl}_2$$ liberates at anode
4
KCET 2023
MCQ (Single Correct Answer)
+1
-0

Consider the following 4 electrodes

$$\begin{aligned} & \mathrm{A}: \mathrm{Ag}^{+}(0.0001 \mathrm{M}) / \mathrm{Ag}(s) ; \\ & \mathrm{B}: \mathrm{Ag}^{+}(0.1 \mathrm{M}) / \mathrm{Ag}(s) ; \\ & \mathrm{C}: \mathrm{Ag}^{+}(0.01 \mathrm{M}) / \mathrm{Ag}(s) ; \\ & \mathrm{D}: \mathrm{Ag}^{+}(0.001 \mathrm{M}) / \mathrm{Ag}(s) ; E^{\circ}{ }_{\mathrm{Ag}^{+} / \mathrm{Ag}}=+0.80 \mathrm{~V} \end{aligned}$$

Then reduction potential in volts of the electrodes in the order.

A
B > C > D > A
B
C > D > A > B
C
A > D > C > B
D
A > B > C > D
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