O.N of \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{2}^{-}}\)is +3 \(\mathrm{\mathrm{Cl}}\) in \(\mathrm{\mathrm{ClO}_{3}^{-}}\)is +5 \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) is +6 \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-}}\)is +7
NCERT Exemplar
CHXI08:REDOX REACTIONS
315183
Which of the following have been arranged in the decreasing order of oxidation number of sulphur?
315184
In the reaction \(\rm{2 \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}+\mathrm{I}_{2} \rightarrow \mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}+2 \mathrm{NaI}}\), the oxidation state of \(\mathrm{\mathrm{S}}\) is
1 Increased
2 Decreased
3 Remains same
4 None
Explanation:
O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}}\) is +2 O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}}\) is \(\mathrm{+5 / 2}\)
O.N of \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{2}^{-}}\)is +3 \(\mathrm{\mathrm{Cl}}\) in \(\mathrm{\mathrm{ClO}_{3}^{-}}\)is +5 \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) is +6 \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-}}\)is +7
NCERT Exemplar
CHXI08:REDOX REACTIONS
315183
Which of the following have been arranged in the decreasing order of oxidation number of sulphur?
315184
In the reaction \(\rm{2 \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}+\mathrm{I}_{2} \rightarrow \mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}+2 \mathrm{NaI}}\), the oxidation state of \(\mathrm{\mathrm{S}}\) is
1 Increased
2 Decreased
3 Remains same
4 None
Explanation:
O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}}\) is +2 O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}}\) is \(\mathrm{+5 / 2}\)
O.N of \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{2}^{-}}\)is +3 \(\mathrm{\mathrm{Cl}}\) in \(\mathrm{\mathrm{ClO}_{3}^{-}}\)is +5 \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) is +6 \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-}}\)is +7
NCERT Exemplar
CHXI08:REDOX REACTIONS
315183
Which of the following have been arranged in the decreasing order of oxidation number of sulphur?
315184
In the reaction \(\rm{2 \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}+\mathrm{I}_{2} \rightarrow \mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}+2 \mathrm{NaI}}\), the oxidation state of \(\mathrm{\mathrm{S}}\) is
1 Increased
2 Decreased
3 Remains same
4 None
Explanation:
O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}}\) is +2 O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}}\) is \(\mathrm{+5 / 2}\)
O.N of \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{2}^{-}}\)is +3 \(\mathrm{\mathrm{Cl}}\) in \(\mathrm{\mathrm{ClO}_{3}^{-}}\)is +5 \(\mathrm{\mathrm{Cr}}\) in \(\mathrm{\mathrm{CrO}_{4}^{2-}}\) is +6 \(\mathrm{\mathrm{Mn}}\) in \(\mathrm{\mathrm{MnO}_{4}^{-}}\)is +7
NCERT Exemplar
CHXI08:REDOX REACTIONS
315183
Which of the following have been arranged in the decreasing order of oxidation number of sulphur?
315184
In the reaction \(\rm{2 \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}+\mathrm{I}_{2} \rightarrow \mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}+2 \mathrm{NaI}}\), the oxidation state of \(\mathrm{\mathrm{S}}\) is
1 Increased
2 Decreased
3 Remains same
4 None
Explanation:
O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}}\) is +2 O.N. of \(\mathrm{\mathrm{S}}\) in \(\mathrm{\mathrm{Na}_{2} \mathrm{~S}_{4} \mathrm{O}_{6}}\) is \(\mathrm{+5 / 2}\)