MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Unit Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the formula of Sodium hyposulfite? |
| A. | Na2SO4 |
| B. | Na2S2O4 |
| C. | Na2S3O4 |
| D. | NaS3O3 |
| Answer» C. Na2S3O4 | |
| 2. |
Sulfuric acid and arsenic and antimony oxides as promoters in reduction processes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
SULFURIC_ACID_AND_ARSENIC_AND_ANTIMONY_OXIDES_AS_PROMOTERS_IN_REDUCTION_PROCESSES.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
What is the formula of Sodium hyposulfite?$ |
| A. | Na<sub>2</sub>SO<sub>4</sub> |
| B. | Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub> |
| C. | Na<sub>2</sub>S<sub>3</sub>O<sub>4</sub> |
| D. | NaS<sub>3</sub>O<sub>3</sub> |
| Answer» C. Na<sub>2</sub>S<sub>3</sub>O<sub>4</sub> | |
| 5. |
Which factor(s) influence the yield and quantity of the product in Electrolytic reduction? |
| A. | Density |
| B. | Temperature |
| C. | Composition of electrode |
| D. | All of the mentioned |
| Answer» E. | |
| 6. |
What is the role of an Inhibitor in the chemical reaction? |
| A. | Increase the reaction rate |
| B. | Prevents the reaction |
| C. | Decrease in activation energy |
| D. | All of the mentioned |
| Answer» C. Decrease in activation energy | |
| 7. |
Which one of the following is used as a Cathode electrode? |
| A. | Mercury |
| B. | Copper |
| C. | Iron |
| D. | All of the mentioned |
| Answer» B. Copper | |
| 8. |
What is the role of a promoter? |
| A. | Slow down the reaction |
| B. | Inhibits the reaction |
| C. | Increases the catalyst process |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Which one of the following is the electrolyte used in electrolytic reduction? |
| A. | Phenol |
| B. | Sodium hydroxide |
| C. | Amine |
| D. | None of the mentioned |
| Answer» C. Amine | |
| 10. |
In which reduction process is there a use of potential difference? |
| A. | Electrolytic reduction |
| B. | Sulphide reduction |
| C. | Electrophilic reduction |
| D. | Amines reduction |
| Answer» B. Sulphide reduction | |
| 11. |
What is/are the important uses of alkali or metal alkali? |
| A. | Preparation of nitroamines from dinitro compounds |
| B. | Reduction of nitrophenols |
| C. | Reduction of nitroanthraquinones |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
Why are Alkali reduction most preferred in technical operation? |
| A. | Milder than acid and metal reduction |
| B. | Control degree of reduction |
| C. | Controls the rate |
| D. | All of the mentioned |
| Answer» E. | |
| 13. |
Why is there a need to add Magnesium salts in Sulfide reduction? |
| A. | Faster reaction |
| B. | Prevents formation of harmful substance |
| C. | Brings equilibrium |
| D. | Lower down the activation energy |
| Answer» C. Brings equilibrium | |