Oxidation Number
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CHXI08:REDOX REACTIONS

315240 In which of the following compounds, an element exhibits two different oxidation states.

1 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3}}\)
3 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
4 \(\mathrm{N_{3} H}\)
NCERT Exemplar
CHXI08:REDOX REACTIONS

315241 Among the following compounds, nitrogen exhibits highest oxidation state in

1 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
2 \(\mathrm{\mathrm{NH}_{3}}\)
3 \(\mathrm{\mathrm{N}_{3} \mathrm{H}}\)
4 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
CHXI08:REDOX REACTIONS

315242 +3 oxidation state is most common in

1 \(\mathrm{Ni}(28)\)
2 \(\mathrm{Fe}\) (26)
3 \(\mathrm{Zn}(30)\)
4 \(\mathrm{Cu}(29)\)
CHXI08:REDOX REACTIONS

315243 The number of species from the following having +2 oxidation state of metal ion is ____ .
\({\mathrm{\mathrm{FeO}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{CuI}, \mathrm{CuO}, \mathrm{SnCl}_{2}, \mathrm{SnCl}_{4}, \mathrm{Hg}_{2} \mathrm{Cl}_{2}}}\), \({\mathrm{\mathrm{HgCl}_{2}}}\)

1 6
2 3
3 5
4 4
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CHXI08:REDOX REACTIONS

315240 In which of the following compounds, an element exhibits two different oxidation states.

1 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3}}\)
3 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
4 \(\mathrm{N_{3} H}\)
NCERT Exemplar
CHXI08:REDOX REACTIONS

315241 Among the following compounds, nitrogen exhibits highest oxidation state in

1 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
2 \(\mathrm{\mathrm{NH}_{3}}\)
3 \(\mathrm{\mathrm{N}_{3} \mathrm{H}}\)
4 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
CHXI08:REDOX REACTIONS

315242 +3 oxidation state is most common in

1 \(\mathrm{Ni}(28)\)
2 \(\mathrm{Fe}\) (26)
3 \(\mathrm{Zn}(30)\)
4 \(\mathrm{Cu}(29)\)
CHXI08:REDOX REACTIONS

315243 The number of species from the following having +2 oxidation state of metal ion is ____ .
\({\mathrm{\mathrm{FeO}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{CuI}, \mathrm{CuO}, \mathrm{SnCl}_{2}, \mathrm{SnCl}_{4}, \mathrm{Hg}_{2} \mathrm{Cl}_{2}}}\), \({\mathrm{\mathrm{HgCl}_{2}}}\)

1 6
2 3
3 5
4 4
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CHXI08:REDOX REACTIONS

315240 In which of the following compounds, an element exhibits two different oxidation states.

1 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3}}\)
3 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
4 \(\mathrm{N_{3} H}\)
NCERT Exemplar
CHXI08:REDOX REACTIONS

315241 Among the following compounds, nitrogen exhibits highest oxidation state in

1 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
2 \(\mathrm{\mathrm{NH}_{3}}\)
3 \(\mathrm{\mathrm{N}_{3} \mathrm{H}}\)
4 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
CHXI08:REDOX REACTIONS

315242 +3 oxidation state is most common in

1 \(\mathrm{Ni}(28)\)
2 \(\mathrm{Fe}\) (26)
3 \(\mathrm{Zn}(30)\)
4 \(\mathrm{Cu}(29)\)
CHXI08:REDOX REACTIONS

315243 The number of species from the following having +2 oxidation state of metal ion is ____ .
\({\mathrm{\mathrm{FeO}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{CuI}, \mathrm{CuO}, \mathrm{SnCl}_{2}, \mathrm{SnCl}_{4}, \mathrm{Hg}_{2} \mathrm{Cl}_{2}}}\), \({\mathrm{\mathrm{HgCl}_{2}}}\)

1 6
2 3
3 5
4 4
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CHXI08:REDOX REACTIONS

315240 In which of the following compounds, an element exhibits two different oxidation states.

1 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3}}\)
3 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
4 \(\mathrm{N_{3} H}\)
NCERT Exemplar
CHXI08:REDOX REACTIONS

315241 Among the following compounds, nitrogen exhibits highest oxidation state in

1 \(\mathrm{\mathrm{N}_{2} \mathrm{H}_{4}}\)
2 \(\mathrm{\mathrm{NH}_{3}}\)
3 \(\mathrm{\mathrm{N}_{3} \mathrm{H}}\)
4 \(\mathrm{\mathrm{NH}_{2} \mathrm{OH}}\)
CHXI08:REDOX REACTIONS

315242 +3 oxidation state is most common in

1 \(\mathrm{Ni}(28)\)
2 \(\mathrm{Fe}\) (26)
3 \(\mathrm{Zn}(30)\)
4 \(\mathrm{Cu}(29)\)
CHXI08:REDOX REACTIONS

315243 The number of species from the following having +2 oxidation state of metal ion is ____ .
\({\mathrm{\mathrm{FeO}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{CuI}, \mathrm{CuO}, \mathrm{SnCl}_{2}, \mathrm{SnCl}_{4}, \mathrm{Hg}_{2} \mathrm{Cl}_{2}}}\), \({\mathrm{\mathrm{HgCl}_{2}}}\)

1 6
2 3
3 5
4 4