A brown ring complex compound is formulated as The oxidation state of iron is
1. 1
2. 2
3. 3
4. 0
The oxidation number of P in Mg2P2O7 is -
1. | +3 | 2. | +2 |
3. | +5 | 4. | –3 |
What is the oxidation number of sulphur in -
(1)
(2)
(3)
(4)
What is the oxidation number of Co in
(1) + 2
(2) + 3
(3) + 4
(4) + 5
When KMnO4 acts as an oxidizing agent and ultimately forms \(\left[\mathrm{MnO}_4\right]^{-2}, \mathrm{MnO}_2, \mathrm{Mn}_2 \mathrm{O}_3, \mathrm{Mn}^{+2}\)
then the number of electrons transferred in each case, respectively, are:
1. | 4, 3, 1, 5 | 2. | 1, 5, 3, 7 |
3. | 1, 3, 4, 5 | 4. | 3, 5, 7, 1 |
For the redox reaction the correct coefficients of the reactants for the balanced reaction are
|
|
|
|
(1) |
2 |
5 |
16 |
(2) |
16 |
5 |
2 |
(3) |
5 |
16 |
2 |
(4) |
2 |
16 |
5 |
The strongest oxidising agent among the following is :
1.
2.
3.
4.
In the balanced chemical reaction,
a, b, c and d respectively correspond to:
1. 5, 6, 3, 3
2. 5, 3, 6, 3
3. 3, 5, 3, 6
4. 5, 6, 5, 5
The number of moles of KMnO4 reduced by one mole of KI in an alkaline medium is:
1. One fifth
2. five
3. One
4. Two
In the equation
The equivalent weight of hydrogen sulphide is [BVP 2003]
(1) 16
(2) 68
(3) 34
(4) 17