9
MCQ (Single Correct Answer)
The largest oxidation number exhibited by an element depends on its outer electronic configuration. With which of the following outer electronic configurations the element will exhibit largest oxidation number?
A
$3 d^1 4 s^2$
B
$3 d^3 4 s^2$
C
$3 d^5 4 s^1$
D
$3 d^5 4 s^2$
10
MCQ (Single Correct Answer)
Identify disproportionation reaction
A
$\mathrm{CH}_4+2 \mathrm{O}_2 \longrightarrow \mathrm{CO}_2+2 \mathrm{H}_2 \mathrm{O}$
B
$\mathrm{CH}_4+4 \mathrm{Cl}_2 \longrightarrow \mathrm{CCl}_4+4 \mathrm{HCl}$
C
$2 \mathrm{~F}_2+2 \mathrm{OH}^{-} \longrightarrow 2 \mathrm{~F}^{-}+\mathrm{OF}_2+\mathrm{H}_2 \mathrm{O}$
D
$2 \mathrm{NO}_2+2 \mathrm{OH}^{-} \longrightarrow \mathrm{NO}_2^{-}+\mathrm{NO}_3^{-}+\mathrm{H}_2 \mathrm{O}$
11
MCQ (Single Correct Answer)
Which of the following elements does not show disproportionation tendency ?
A
Cl
B
Br
C
F
D
I
12
MCQ (Multiple Correct Answer)
Which of the following statement(s) is/are not true about the following decomposition reaction?
$$2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2$$
A
Potassium is undergoing oxidation
B
Chlorine is undergoing oxidation
C
Oxygen is reduced
D
None of the species are undergoing oxidation or reduction
13
MCQ (Multiple Correct Answer)
Identify the correct statement (s) in relation to the following reaction.
$$\mathrm{Zn}+2 \mathrm{HCl} \longrightarrow \mathrm{ZnCl}_2+\mathrm{H}_2$$
A
Zinc is acting as an oxidant
B
Chlorine is acting as a reductant
C
Hydrogen ion is acting as an oxidant
D
Zinc is acting as a reductant