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8
MCQ (Single Correct Answer)

Using the data given below find out the strongest reducing agent.

$$\begin{aligned} & \mathrm{E}^{\mathrm{S} \mathrm{Cr}_2 \mathrm{O}^{2-} / \mathrm{Cr}^{3+}} 1.33 \mathrm{~V} ; \quad \mathrm{E}^{\mathrm{s}} \mathrm{Cl}_2 / \mathrm{Cl}^{-}=1.36 \mathrm{~V} \\ & \mathrm{E}^{\mathrm{S}} \mathrm{MnO}_4^{-} / \mathrm{Mr}^{2+}=1.51 \mathrm{~V} ; \mathrm{E}^{\mathrm{s}} \mathrm{Cr}^{3+} / \mathrm{Cr}=-0.74 \mathrm{~V} \end{aligned}$$

A
$\mathrm{Cl}^{-}$
B
$\mathrm{Cr}$
C
$\mathrm{Cr}^{3+}$
D
$\mathrm{Mn}^{2+}$
9
MCQ (Single Correct Answer)

Use the data given in Q. 8 and find out which of the following is the strongest oxidising agent?

A
$\mathrm{Cl}^{-}$
B
$\mathrm{Mn}^{2+}$
C
$\mathrm{MnO}_4^{-}$
D
$\mathrm{Cr}^{3+}$
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
$\mathrm{Mn}^{2+}$
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