Unit Processes Interview Questions and Answers on “Oxidizing Agents part 2”.
1. What is the formula of Chloric acid?
a) Cl02
b) ClO3
c) HClO3
d) H2ClO3
Answer: c
Clarification: Chloric acid, HCIO3, is a powerful oxidizing agent.
2. What is the advantage of Sodium chlorate?
a) High solubility
b) Less cost
c) Large amount
d) All of the mentioned
Answer: d
Clarification: The solubility of sodium chlorate in water is far greater than that of the potassium salt. Also, it is less expensive, and large amounts are used annually.
3. Peroxide of which agent is used as an oxidizing agent?
a) Lead
b) Manganese
c) Hydrogen
d) All of the mentioned
Answer: d
Clarification: The principal peroxides used as oxidizing agents are those of lead, manganese, and hydrogen; such as: PbO2,MnO2 and H2O2.
4. Silver oxides are strong oxidizing agent?
a) True
b) False
Answer: b
Clarification: Silver has the capacity to act as an oxygen carrier or oxidation catalyst, presumably because it can form oxides other than the common Ag2O. Although not extensively used as such, the oxide, Ag2O, acts as a mild oxidation agent.
5. What is the disadvantage of using Nitric acid as an oxidizing agent?
a) Partial oxidation
b) Nitrating agent
c) Both of the mentioned
d) None of the mentioned
Answer: c
Clarification: The principal disadvantage of nitric acid as a partial oxidizing agent, rises from the tendency to act as a nitrating agent.
6. Copper is capable of existing in two states.
a) True
b) False
Answer: a
Clarification: Copper is capable of existing in two states of oxidation and of passing readily from one to the other of these states by oxidation or reduction. In its higher state of oxidation, it is capable of acting as an oxidizing agent and, in its lower state, as a reducing agent.
7. Copper salt in its lower state reacts as what?
a) Oxidizing agent
b) Reducing agent
c) Neutralizing agent
d) Both oxidizing and reducing agent
Answer: b
Clarification: In its higher state of oxidation, it is capable of acting as an oxidizing agent and, in its lower state, as a reducing agent. This property makes the metal a useful material as an oxygen carrier or oxidation catalyst.
8. Is fusion with alkali in the presence of air possible?
a) Yes
b) No
Answer: a
Clarification: Fusion with alkali in the presence of air (oxygen) often accomplishes oxidations impossible to obtain otherwise. For instance, the formation of oxyacids from substituted phenols by direct oxidation of side chains is difficult of accomplishment because of the much greater susceptibility of the hydroxyl group to attack and consequent tendency for the breakdown of the molecule. Alkali fusion accomplishes the desired reaction but with poor yields.
9. What is the formula of Fuming Sulphuric acid?
a) H2SO3+SO2
b) H2SO4+SO3
c) H2SO4+SO4
d) H2SO4+OH
Answer: b.
Clarification: Fuming sulfuric acid, H2S04 + SO3, in the presence of mercury salts acts as a powerful oxidizing agent.
10. Ozone is a mild oxidizing agent.
a) True
b) False