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

Calculate $$\mathrm{E}_{\text {cell }}^0$$ if the equilibrium constant for following reaction is $$1.2 \times 10^6$$.

$$2 \mathrm{Cu}_{(\mathrm{aq})}^{+} \longrightarrow \mathrm{Cu}_{(\mathrm{aq})}^{++}+\mathrm{Cu}_{(\mathrm{s})}$$

A
$$0.36 \mathrm{~V}$$
B
$$-0.36 \mathrm{~V}$$
C
$$-0.18 \mathrm{~V}$$
D
$$0.18 \mathrm{~V}$$
2
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the overall oxidation reaction that occurs in lead storage cell during discharge.

A
$$\mathrm{Pb}_{\text {(aq) }}^{++}+\mathrm{SO}_{4(\text { aq) }}^{--} \longrightarrow \mathrm{PbSO}_{4(\mathrm{s})}$$
B
$$\mathrm{PbSO}_{4(\mathrm{~s})}+2 \mathrm{H}_2 \mathrm{O}_{(f)} \longrightarrow \mathrm{PbO}_{2(\mathrm{~B})} +4 \mathrm{H}_{(\mathrm{aq})}^{+} +\mathrm{SO}_{4(\mathrm{aq})}^{--}+2 \mathrm{e}^{-}$$
C
$$\mathrm{Pb}_{(\mathrm{s})}+\mathrm{SO}_{4(\text { aq })}^{--} \longrightarrow \mathrm{PbSO}_{4(\mathrm{s})}+2 \mathrm{e}^{-}$$
D
$$\mathrm{PbSO}_{4(\mathrm{~s})}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Pb}_{(\mathrm{s})}+\mathrm{SO}_{4(\mathrm{aq})}^{--}$$
3
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the time required in second to deposit $$6.35 \mathrm{~g}$$ copper from its salt solution by passing 5 ampere current. [Molar mass of $$\mathrm{Cu}=63.5 \mathrm{~g} \mathrm{~mol}^{-1}$$ ]

A
3600
B
3700
C
3860
D
4000
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following expressions represents molar conductivity of $$\mathrm{AB}_3$$ type electrolyte?

A
$$3 \lambda_{\mathrm{A}^{\cdots}}^{\circ}+\lambda_{\mathrm{B}^{-}}^{\circ}$$
B
$$\lambda_{\mathrm{A}^{\cdots}}^{\circ}+\lambda_{\mathrm{B}^{-}}^{\circ}$$
C
$$\lambda_{\mathrm{A}^{\cdots}}^{\circ}+3\lambda_{\mathrm{B}^{-}}^{\circ}$$
D
$$2\lambda_{\mathrm{A}^{\cdots}}^{\circ}+\lambda_{\mathrm{B}^{-}}^{\circ}$$
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