10
MCQ (Single Correct Answer)
Using the data given in 0.8 find out in which option the order of reducing power is correct.
A
$\mathrm{Cr}^{3+}<\mathrm{Cl}^{-}<\mathrm{Mn}^{2+}<\mathrm{Cr}$
B
$\mathrm{Mn}^{2+}<\mathrm{Cl}^{-}<\mathrm{Cr}^{3+}<\mathrm{Cr}$
C
$\mathrm{Cr}^{3+}<\mathrm{Cl}^{-}<\mathrm{Cr}_2 \mathrm{O}_7^{2-}<\mathrm{MnO}_4^{-}$
D
$\mathrm{Mn}^{2+}<\mathrm{Cr}^{3+}<\mathrm{Cl}^{-}<\mathrm{Cr}$
11
MCQ (Single Correct Answer)
Use the data given in Q. 8 and find out the most stable ion in its reduced form.
A
$\mathrm{Cl}^{-}$
B
$\mathrm{Cr}^{3+}$
C
$\mathrm{Cr}$
D
$\mathrm{Mn}^{2+}$
12
MCQ (Single Correct Answer)
Use the data of $Q .8$ and find out the most stable oxidised species.
A
$\mathrm{Cr}^{3+}$
B
$\mathrm{MnO}_4^{-}$
C
$\mathrm{Cr}_2 \mathrm{O}_7^{2-}$
D
$\mathrm{Mn}^{2+}$
13
MCQ (Single Correct Answer)
The quantity of charge required to obtain one mole of aluminium from $\mathrm{Al}_2 \mathrm{O}_3$ is ............. .
A
1 F
B
6 F
C
3 F
D
2 F
14
MCQ (Single Correct Answer)
The cell constant of a conductivity cell ............ .
A
changes with change of electrolyte
B
changes with change of concentration of electrolyte
C
changes with temperature of electrolyte
D
remains constant for a cell