MHT CET 2024 4th May Evening Shift | Electrochemistry Question 31 | Chemistry

If $\mathrm{E}^{\circ}$ cell for $\mathrm{Cd}_{(\mathrm{s})}\left|\mathrm{Cd}_{(\mathrm{IM})}^{2+} \square \mathrm{Ag}_{(1 \mathrm{M})}^{+}\right| \mathrm{Ag}_{(\mathrm{s})}$ is 1.2 V . What is the emf of the cell at $25^{\circ} \mathrm{C}$ ?

$-1.2$ V

$2.4$ V

$-2.4$ V

$1.2$ V

MHT CET 2024 4th May Evening Shift

MCQ (Single Correct Answer)

-0

What is the conductivity of $0.02 \mathrm{~M} \mathrm{~AgNO}_3$ solution having cell constant $1.1 \mathrm{~cm}^{-1}$ and resistance is 94.5 ohms?

$0.0216 \mathrm{~ohm}^{-1} \mathrm{~cm}^{-1}$

$0.0116 \mathrm{~ohm}^{-1} \mathrm{~cm}^{-1}$

$0.0416 \mathrm{~ohm}^{-1} \mathrm{~cm}^{-1}$

$0.0859 \mathrm{~ohm}^{-1} \mathrm{~cm}^{-1}$

MHT CET 2024 4th May Evening Shift

MCQ (Single Correct Answer)

-0

Which of the following expressions for conductivity of solution of an electrolyte is NOT correct?

$\mathrm{k}=\frac{1}{\varrho}$

$\mathrm{k}=\mathrm{G} \frac{1}{\mathrm{a}}$

$\mathrm{k}=\frac{1}{\mathrm{R}} \frac{\mathrm{a}}{1}$

$\mathrm{k}=\Lambda . \mathrm{c}$

MHT CET 2024 4th May Morning Shift

MCQ (Single Correct Answer)

-0

Which of the following reactions occurs at cathode during discharging of lead accumulator?

$\mathrm{PbSO}_{4(\mathrm{~s})}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Pb}_{(\mathrm{s})}+\mathrm{SO}_{4 \text { (aq.) }}^{2-}$

$\mathrm{Pb}_{(\mathrm{s})}+\mathrm{SO}_{4(\mathrm{oq})}^{2-} \longrightarrow \mathrm{PbSO}_{4(\mathrm{~s})}+2 \mathrm{e}^{-}$

$\begin{aligned} \mathrm{PbO}_{2(s)}+4 \mathrm{H}_{(\mathrm{aq})}^{+}+\mathrm{SO}_{4(\mathrm{qq})}^{2-} +2 \mathrm{e}^{-} \longrightarrow \mathrm{PbSO}_{4(\mathrm{~s})} +2 \mathrm{H}_2 \mathrm{O}_{(1)}\end{aligned}$

$\begin{aligned} & \mathrm{PbSO}_{4(\mathrm{~s})}+2 \mathrm{H}_2 \mathrm{O}_{(1)} \longrightarrow \mathrm{PbO}_{2(\mathrm{~s})}+4 \mathrm{H}_{(\mathrm{aq})}^{+}+\mathrm{SO}_{4(\mathrm{aq})}^{2-}+2 \mathrm{e}^{-}\end{aligned}$

PREVIOUS NEXT

MHT CET Subjects