1
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which noble gas element from following exhibits highest number of different oxidation states?

A
Xe
B
Kr
C
Ar
D
Ne
2
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following is a pair of monocarboxylic acids?

A
Malonic acid and propionic acid
B
Valeric acid and succinic acid
C
Acetic acid and adipic acid
D
Butyric acid and caproic acid
3
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the overall oxidation reaction that occurs in lead storage cell during discharge.

A
$$\mathrm{Pb}_{\text {(aq) }}^{++}+\mathrm{SO}_{4(\text { aq) }}^{--} \longrightarrow \mathrm{PbSO}_{4(\mathrm{s})}$$
B
$$\mathrm{PbSO}_{4(\mathrm{~s})}+2 \mathrm{H}_2 \mathrm{O}_{(f)} \longrightarrow \mathrm{PbO}_{2(\mathrm{~B})} +4 \mathrm{H}_{(\mathrm{aq})}^{+} +\mathrm{SO}_{4(\mathrm{aq})}^{--}+2 \mathrm{e}^{-}$$
C
$$\mathrm{Pb}_{(\mathrm{s})}+\mathrm{SO}_{4(\text { aq })}^{--} \longrightarrow \mathrm{PbSO}_{4(\mathrm{s})}+2 \mathrm{e}^{-}$$
D
$$\mathrm{PbSO}_{4(\mathrm{~s})}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Pb}_{(\mathrm{s})}+\mathrm{SO}_{4(\mathrm{aq})}^{--}$$
4
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the change in oxidation number of selenium in the following redox reaction?

$$\mathrm{SeO}_{3(\text { (a) })}^{2-}+\mathrm{Cl}_{2(\mathrm{~g})}+2 \mathrm{OH}^{-} \longrightarrow \mathrm{SeO}_{4(\text { (a) })}^{2-}+2 \mathrm{Cl}_{(\text {(a) })}^{-}+\mathrm{H}_2 \mathrm{O}$$

A
+2 to $$-$$2
B
$$-$$2 to +2
C
+4 to +6
D
+3 to +4
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