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 species that does not contain peroxide ions is :
(1) PbO
(2) HO
(3) SrO
(4) BaO
The oxidation number of phosphorous in ATP (adenosine triphosphate) is -
1. | 2 | 2. | 3 |
3. | 4 | 4. | 5 |
Which of the following does not represent a redox reaction?
1. Cr2O72- + 2OH- CrO42- + H2O
2. SO42- + 2I- + 2H+ I2 + H2S + H2O
3. Ca + 2H2O → Ca(OH)2 + H2
4. PCl5 PCl3 + Cl2
Among the following, identify the species with an atom in +6 oxidation state-
1. MnO4-
2. Cr(CN)63-
3. NiF62-
4. CrO2Cl2
The equivalent weight of MnSO4 is half its molecular weight when it is converted to
1. MnO
2.
3.
4.
An aqueous solution of 6.3 g oxalic acid dihydrate is made up to 250 mL. The volume of 0.1 N NaOH required to completely neutralize 10 mL of this solution is
1. 4 mL
2. 20 mL
3. 40 mL
4. 60 mL
KMnO4 (mol. wt=158) oxidizes oxalic acid in acidic medium to CO2 and water as follows.
What is the equivalent weight of KMnO4?
1. 158
2. 31.6
3. 39.5
4. 79
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
In the given reaction, what is the name of the species that bleaches the substances due to its oxidising action?
Cl2(g) + 2OH-(aq) → ClO-(aq) + Cl-(aq) + H2O(l)
1. ClO-
2. Cl2
3. Cl-
4. Both ClO- and Cl-