MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Process Calculation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the percent excess air? |
| A. | 25 |
| B. | 45 |
| C. | 65 |
| D. | 85 |
| Answer» B. 45 | |
| 2. |
What is the value of required O2 in moles? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 3. |
What is value of entering O2 in moles? |
| A. | 0.25 |
| B. | 1.25 |
| C. | 2.25 |
| D. | 3.25 |
| Answer» C. 2.25 | |
| 4. |
In BOD test, the quantity of O2 used is determined by the difference in the dissolved O2 in the water in the beginning of the test and at the end of five days
|
| A. | True |
| B. | False |
| C. | Not sufficient data |
| D. | None of the mentioned |
| Answer» B. False | |
| 5. |
For BOD test, incorrect statement is |
| A. | The test is carried out for number of days at 20 degree celsius |
| B. | Five days is the most common duration |
| C. | both a and b |
| D. | None of the mentioned |
| Answer» E. | |
| 6. |
The quantity of oxygen required by microorganisms to oxidize the organic compounds in a sample as deter present in a sample is called |
| A. | Total Oxygen Demand (TOD) |
| B. | Chemical Oxygen Demand (COD) |
| C. | Biochemical Oxygen Demand (BOD) |
| D. | Theoretical Oxygen Demand (TOD) |
| Answer» D. Theoretical Oxygen Demand (TOD) | |
| 7. |
The COD value is ________than the BOD value. |
| A. | Lower |
| B. | Higher |
| C. | Depends on a particular sample |
| D. | None of the mentioned |
| Answer» C. Depends on a particular sample | |
| 8. |
The quantity of oxygen required to completely oxidize all the organic compounds present in a sample is called |
| A. | Total Oxygen Demand (TOD) |
| B. | Chemical Oxygen Demand (COD) |
| C. | Biochemical Oxygen Demand (BOD) |
| D. | Theoretical Oxygen Demand (TOD) |
| Answer» C. Biochemical Oxygen Demand (BOD) | |
| 9. |
The quantity of oxygen required to completely oxidize all the organic and inorganic compounds present in a sample is called |
| A. | Total Oxygen Demand (TOD) |
| B. | Chemical Oxygen Demand (COD) |
| C. | Biochemical Oxygen Demand (BOD) |
| D. | Theoretical Oxygen Demand (TOD) |
| Answer» B. Chemical Oxygen Demand (COD) | |