5 Written Questions

1. SO2
2. Metallous ions
3. O2 or H2O
4. MnO2
5. NO2

5 Multiple Choice Questions

1. Mn2+
   1. Cr2O72- ( acid solution)
   2. CrO42- ( basic solution)
   3. MnO4- ( basic solution)
   4. MnO4- ( acid solution)
2. Cl-
   1. H2O2
   2. HClO4
   3. Na2O2
   4. C2O42-
3. Cr3+
   1. MnO4- ( basic solution)
   2. MnO2 ( acid solution)
   3. CrO42- ( basic solution)
   4. MnO4- ( acid solution)
4. Cr3+
   1. MnO4- ( basic solution)
   2. MnO4- ( acid solution)
   3. Cr2O72- ( acid solution)
   4. MnO2 ( acid solution)
5. CO2
   1. HClO4
   2. H2O2
   3. Na2O2
   4. C2O42-

4 True/False Questions

1. Free Halogens → Cl-

   True        False

2. MnO2 ( acid solution) → MnO2

   True        False

3. Na2O2 → OH-

   True        False

4. HNO3 ( dilute) → NO

   True        False