1. HNO3
2. HNO2
3. HI
4. H2SO4
HNO2
1. CaCO3→CaO +CO2
2. O2+2H2→2H2O
3. Na +H2O→NaOH+ 1/2 H2
4. MnCl3→ MnCl2+1/2 Cl2
CaCO3→CaO +CO2
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. MnO4-
2. Cr(C N)63-
3. NiF62-
4. CrO2Cl2
CrO2Cl2
1. Water is oxidized
2. Electrons are reduced
3. Silver is oxidized
4. Silver is reduced
Silver is reduced
1. Corrosion of metals
2. Extraction of metals from their ores
3. Respiration
4. All of these
All of these
1. HNO3
2. KMnO4
3. H2SO4
4. (COOH)2
(COOH)2
1. PbS +4H2O2→PbSO4+4H2O
2. 2 KI +H2O2→2 KOH +I2
3. 2FeSO4+H2SO4+H2O2→Fe2(SO4)3+2H2O
4. Ag2O+H2O2→2Ag+H2O+O2
Ag2O+H2O2→2Ag+H2O+O2
1. +3
2. +5
3. +6
4. 0
+6
1. 7
2. 8
3. +1
4. 4
7