MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not used in colloidal conditioning? |
| A. | Kerosene |
| B. | Tannin |
| C. | Agar-agar |
| D. | Vinegar |
| Answer» E. | |
| 2. |
Carbonate conditioning is not done in high pressure boilers because it may lead to caustic embrittlement. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Iron oxide and copper depositions can be prevented by adding ___________ to the boiler water. |
| A. | Calgon |
| B. | Carbonate |
| C. | EDTA |
| D. | EBT |
| Answer» D. EBT | |
| 4. |
Calgon conditioning is not applicable for the prevention of ___________ |
| A. | Iron oxide only |
| B. | Copper depositions only |
| C. | Sulphurdioxide only |
| D. | Iron oxide and copper depositions |
| Answer» E. | |
| 5. |
The quantity of calgon to be added to prevent scale and sludge formation is ___________ |
| A. | 10-20 ppm |
| B. | 30-50 ppm |
| C. | 0.005-0.1 ppm |
| D. | 0.5-5 ppm |
| Answer» E. | |
| 6. |
Calgon converts the scale forming impurity like CaSO4 into ___________ |
| A. | Soluble complex compound |
| B. | Insoluble complex compound |
| C. | Soluble acids |
| D. | Insoluble acids |
| Answer» B. Insoluble complex compound | |
| 7. |
Calgon is added to boiler water to prevent ___________ |
| A. | Foaming |
| B. | Sludge and scale formation |
| C. | Priming |
| D. | Corrosion |
| Answer» C. Priming | |