1. -3 to +5
2. +3 and +5
3. -3, +3 and +5
4. -3 and +3
-3 to +5
1. +3
2. +5
3. +6
4. 0
+6
1. Reduction
2. Oxidation
3. Redox reaction
4. Neutralization reaction
Redox reaction
1. FeSO4. (NH4)2SO4. 6H2O
2. 4NH3+5O2→4 NO +6H2O
3. 2NO+H2SO3→N2O+H2SO4
4. 2NO+H2S→ N2O+S+H2O
4NH3+5O2→4 NO +6H2O
1. Corrosion of metals
2. Extraction of metals from their ores
3. Respiration
4. All of these
All of these
1. +7
2. +6
3. +4
4. +8
+8
1. Zn is reduced to Zn2+
2. Zn is oxidized to Zn2+
3. Zn2+is oxidized to Zn2
4. Cu2+ is oxidized to Cu
Zn is oxidized to Zn2+
1. P is only oxidized
2. P is only reduced
3. P is both oxidized as well as reduced
4. None of these
P is both oxidized as well as reduced
1. NaCl+KNO3→NaNO3+KCl
2. CaC2O4+2NH4Cl→CaCl2+H2C2O4
3. Mg(OH)2+2NH4Cl→ MgCl2+2NH4OH
4. Zn+2AgCN→2Ag+Zn(CN)2
Zn+2AgCN→2Ag+Zn(CN)2
1. FeO3. H2O
2. 2FeO3. H2O
3. 2Fe2O3. H2O
4. Fe2O3. 2H2O
2Fe2O3. H2O