Which of the following is the most detrimental for water used in high pressure boiler ?
Correct answer: D. Silica
- A. Dissolved oxygen
- B. Turbidity
- C. Phenol
- D. Silica
Explanation
Silica is especially harmful in high-pressure boilers because it forms hard scale and can volatilise, causing deposits on turbine blades. Turbidity and phenol are less characteristic boiler hazards, while dissolved oxygen mainly promotes corrosion.
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