MCQOPTIONS
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| 1. |
Corrosion in boilers can be prevented by |
| A. | Deaeration of feed water |
| B. | Enhancing pH of feed water by adding alkali |
| C. | Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion |
| D. | All of the above |
| Answer» E. | |