MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Pulp Paper knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Fill in the blank. __________ =(Na2S)/(Na2SO4 + Na2S)X 100% |
| A. | Reduction efficiency |
| B. | Causticity |
| C. | Effective alkali |
| D. | Active alkali |
| Answer» B. Causticity | |
| 2. |
Fill in the blank. __________ =(NaOH)/(NaOH + Na2S)X 100% |
| A. | Sulfifdity |
| B. | Causticity |
| C. | Effective alkali |
| D. | Active alkali |
| Answer» C. Effective alkali | |
| 3. |
Fill in the blank. __________ =(Na2S)/(NaOH + Na2S)X 100% |
| A. | Sulfifdity |
| B. | Causticity |
| C. | Effective alkali |
| D. | Active alkali |
| Answer» B. Causticity | |
| 4. |
__________ is a fresh pulping liquor for the Kraft process, consisting of the active pulping species NaOH and Na2S, small amounts of Na2CO3. |
| A. | Black liquor |
| B. | White liquor |
| C. | Red liquor |
| D. | Green liquor |
| Answer» C. Red liquor | |
| 5. |
What is the correct definition of H – factor? |
| A. | It is a pulping variable that combines ignition temperature and time into a single variable |
| B. | It is a pulping variable that combines cooking temperature and time into a single variable |
| C. | It is a pulping variable that combines sublimation temperature and time into a single variable |
| D. | It is a pulping variable that combines vaporization temperature and time into a single variable |
| Answer» C. It is a pulping variable that combines sublimation temperature and time into a single variable | |
| 6. |
The degree of Kraft cook for bleachable grades of pulp, have a lignin content of 3 – 5.2% for softwood and 1.8 – 2.4% for hardwood. |
| A. | Soft |
| B. | Medium |
| C. | Hard |
| D. | Ultra |
| Answer» B. Medium | |
| 7. |
__________ is the partially recovered form of Kraft liquor. It is obtained after burning of the black liquor in the recovery boiler. |
| A. | Black liquor |
| B. | White liquor |
| C. | Red liquor |
| D. | Green liquor |
| Answer» E. | |
| 8. |
__________ is the waste liquor from the Kraft pulping process after pulping is completed. |
| A. | Black liquor |
| B. | White liquor |
| C. | Red liquor |
| D. | Green liquor |
| Answer» B. White liquor | |
| 9. |
__________ is a fresh pulping liquor for the Kraft process, consisting of the active pulping species NaOH and Na2S, small amounts of Na2CO3. |
| A. | Black liquor |
| B. | White liquor |
| C. | Red liquor |
| D. | Green liquor |
| Answer» C. Red liquor | |
| 10. |
What is the correct definition of H – factor?$ |
| A. | It is a pulping variable that combines ignition temperature and time into a single variable |
| B. | It is a pulping variable that combines cooking temperature and time into a single variable |
| C. | It is a pulping variable that combines sublimation temperature and time into a single variable |
| D. | It is a pulping variable that combines vaporization temperature and time into a single variable |
| Answer» C. It is a pulping variable that combines sublimation temperature and time into a single variable | |
| 11. |
The degree of Kraft cook for bleachable grades of pulp, have a lignin content of 3 – 5.2% for softwood and 1.8 – 2.4% for hardwood.$ |
| A. | Soft |
| B. | Medium |
| C. | Hard |
| D. | Ultra |
| Answer» B. Medium | |
| 12. |
Wood species is an important variable during Kraft cooking process. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Kraft pulping is a full chemical pulping method using sodium hydroxide and sodium sulfide at pH above 12. |
| A. | True |
| B. | False |
| Answer» B. False | |