1
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

For a Galvanic cell consisting zinc electrode and standard hydrogen electrode,

$$ \mathrm{E}^{\mathrm{o}}\left(\mathrm{Zn}_{(\mathrm{aq})}^{+2} \mid \mathrm{Zn}_{(\mathrm{s})}\right)=-0.76 \mathrm{~V} $$

Identify the reaction that takes place at positive electrode during working of cell?

A
$\mathrm{Zn}_{(\mathrm{s})} \longrightarrow \mathrm{Zn}_{(\mathrm{aq})}^{+2}+2 \mathrm{e}^{-}$
B
$\mathrm{Zn}_{(\mathrm{aq})}^{+2}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Zn}_{(\mathrm{s})}$
C

$\quad \mathrm{H}_{2(\mathrm{~g})} \longrightarrow 2 \mathrm{H}_{(\mathrm{g})}^{+}+2 \mathrm{e}^{-}$

D
$\quad 2 \mathrm{H}_{(\mathrm{g})}^{+}+2 \mathrm{e}^{-} \longrightarrow \mathrm{H}_{2(\mathrm{~g})}$
2
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the number of faraday required to form $1 \mathrm{~mol} \mathrm{H}_2$ by reduction of $\mathrm{H}^{+}$ions?

A
4
B
2
C
0.5
D
1
3
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

For the cell,

${ }^{\ominus} \mathrm{Zn}_{(\mathrm{s})}\left|\mathrm{Zn}^{+2}(1 \mathrm{M})\right|\left|\mathrm{Ag}^{+1}(1 \mathrm{M})\right| \mathrm{Ag}_{(\mathrm{s})}{ }^{\oplus}$

If concentration of $\mathrm{Zn}^{+2}$ decreases to 0.1 M at 298 K , then emf of cell

A
increase by 0.0592 V
B
decrease by 0.0592 V
C
increase by 0.0296 V
D
decrease by 0.0296 V
4
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the cell constant of conductivity cell containing 0.1 M KCl solution having resistance $60 \Omega$ and conductivity $0.014 \Omega^{-1} \mathrm{~cm}^{-1}$ at $25^{\circ} \mathrm{C}$.

A
$0.42 \mathrm{~cm}^{-1}$
B
$0.84 \mathrm{~cm}^{-1}$
C
$0.60 \mathrm{~cm}^{-1}$
D
$1.04 \mathrm{~cm}^{-1}$
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