Zincs are installed in the main and auxiliary condenser water boxes to __________.

Correct Answer: Option D — reduce the effects of electrolysis

Zinc plates act as sacrificial anodes in seawater-cooled condenser water boxes. Dissimilar metals exposed to an electrolyte experience galvanic corrosion; zinc possesses a lower electrochemical potential, corroding preferentially to protect the bronze water boxes and tube sheets from destructive electrolysis.