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
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 correct statement(s) about the given reaction is -
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
Oxidation number of oxygen in potassium super oxide (KO2) is-
1. – 2
2. – 1
3. – 1/2
4. – 1/4
What is the alteration in the oxidation state of carbon in the given reaction?
\(\mathrm{{CH_4}_{(g)} + 4{Cl_2}_{(g)} \rightarrow {CCl_4}_{(l)} + 4 HCl_{(g)}}\)
1. 0 to +4
2. –4 to +4
3. 0 to –4
4. +4 to +4
The oxidizing agent and reducing agent in the given reaction are :
1. Oxidising agent = ; Reducing agent =
2. Oxidising agent = ; Reducing agent =
3. Oxidising agent = ; Reducing agent =
4. Oxidising agent = ; Reducing agent =
The oxidising agent and reducing agent in the given reaction are :
1. Oxidizing agent = H2O2; Reducing agent =
2. Oxidizing agent = ; Reducing agent =
3. Oxidizing agent = H2O2; Reducing agent = H2O2
4. None of the above
The incorrect statement regarding the rule to find the oxidation number among the following is-
1. | The oxidation number of hydrogen is always +1. |
2. | The algebraic sum of all the oxidation numbers carried by elements in a compound is zero. |
3. | An element in its free or uncombined state has an oxidation number of zero. |
4. | Generally, in all its compounds, the oxidation number of fluorine is -1. |
The largest oxidation number exhibited by an element depends on its electronic configuration. With which of the following electronic configurations will the element exhibit the largest oxidation number?
1. 3d14s2
2. 3d34s2
3. 3d54s1
4. 3d54s2