MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 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. |
The duration of the polymerization depends on what? |
| A. | Temperature |
| B. | Catalyst |
| C. | Size of batch |
| D. | All of the mentioned |
| Answer» E. | |
| 2. |
Dimethyl terephthalate is obtained by esterification of what? |
| A. | Benzene |
| B. | Ethanol |
| C. | Terephthalic acid |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
Polyethylene terephthalate is prepared by a transesterification reaction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
DIMETHYL_TEREPHTHALATE_IS_OBTAINED_BY_ESTERIFICATION_OF_WHAT??$ |
| A. | Benzene |
| B. | Ethanol |
| C. | Terephthalic acid |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
The duration of the polymerization depends on what?$ |
| A. | Temperature |
| B. | Catalyst |
| C. | Size of batch |
| D. | All of the mentioned |
| Answer» E. | |
| 6. |
Polyethylene terephthalate is prepared by a transesterification reaction? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Polyethylene terephthalate is used in the manufacture of Dacron polyester fibre. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The presence of considerable amount of water affects what? |
| A. | Apparatus |
| B. | Temperature |
| C. | Both apparatus and temperature |
| D. | None of the mentioned |
| Answer» B. Temperature | |
| 9. |
What does refining of the ester include? |
| A. | Neutralising |
| B. | Water washing |
| C. | Agitation |
| D. | All of the mentioned |
| Answer» E. | |
| 10. |
Which process is used for manufacturing ethyl acetate? |
| A. | Batch process |
| B. | Continuous process |
| C. | Semi batch process |
| D. | All of the mentioned |
| Answer» E. | |
| 11. |
As temperatures and concentrations of corrodents are increased, which type of stainless steels is/are used? |
| A. | Ferritic chromium alloys |
| B. | Chromium-nickel alloys |
| C. | Both the alloys |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 12. |
Which type of apparatus is used for commercial-scale esterification units? |
| A. | Alloy |
| B. | Stainless steel |
| C. | Hydrogenated steel |
| D. | None of the mentioned |
| Answer» C. Hydrogenated steel | |
| 13. |
In esterification plant it is necessary to employ which catalyst? |
| A. | Nitric acid |
| B. | Hydrochloric acid |
| C. | Sulphuric acid |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 14. |
The plant for making esters from organic acids and alcohols is divided into how many types? |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Five |
| Answer» C. Four | |