The oxidation number of P in Mg2P2O7 is -
1. | +3 | 2. | +2 |
3. | +5 | 4. | –3 |
The oxidation number of carbon in C3O2 and Mg2C3 are respectively:
1. -4/3, +4/3
2. +4/3, -4/3
3. -2/3, +2/3
4. -2/3, +4/3
Which of the following arrangements represents the increasing oxidation number of the central atom?
1.
2.
3.
4.
The oxidation number of oxygen in is respectively -
1. 3, and 2
2. 1, and 0
3. 0, and 1
4. -0.33, and -1
Among the following the correct order of acidity is-
1. HClO < HClO2< HClO3< HClO4
2. HClO2< HClO < HClO3< HClO4
3. HClO4< HClO2< HClO < HClO3
4. HClO3< HClO4< HClO2< HClO
The oxidation states of P in H4P2O5, H4P2O6, H4P2O7, are respectively -
1. | +3, +5, +4 | 2. | +5, +3, +4 |
3. | +5, +4, +3 | 4. | +3, +4, +5 |
The correct statement(s) about the given reaction is -
\(\mathrm{{X} eO_{6 (aq)}^{4 -} + 2 F^{- 1}_{(aq)} + 6 H^{+}_{(aq )} \rightarrow}~\mathrm{{X} eO_{3 (g)} + {F}_{2 (g)} + 3 H_{2} O_{(l)}}\)
1. oxidises F-
2. The oxidation number of F increases from -1 to zero
3. is a stronger oxidizing agent that
4. All of the above.
The element that does not show a disproportionation tendency is/are:
1. | Cl | 2. | Br |
3. | F | 4. | I |
Among the following, identify the species with an atom in +6 oxidation state-
1. MnO4-
2. Cr(CN)63-
3. NiF62-
4. CrO2Cl2
Oxidation number of oxygen in potassium super oxide (KO2) is:
1. – 2
2. – 1
3. – 1/2
4. – 1/4