Q.

Which of the following is not a result of the excess of impurity in boiler-feed?

A. scale and sludge formation
B. decomposition
C. corrosion, priming and foaming
D. caustic embrittlement
Answer» B. decomposition
Explanation: excess of impurities in boiler- feed results in scale and sludge formation, corrosion, priming, foaming and caustic embrittlement. it does not contribute to the decomposition process.
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