Coast Guard Exams
Question 9General Subjects - QMED70% to pass

The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally _______________.

AI Explanation
The correct answer is C) gums, varnishes, and acids. The by-products of oxidation due to water contamination of hydraulic oil are generally gums, varnishes, and acids. These corrosive compounds can damage system components and impair the performance of the hydraulic system. They are not harmless (option A) and are not always neutralized by oil additives (option B). While cellulose type filters may help remove some of these contaminants (option D), they do not prevent the formation of the oxidation by-products in the first place.