Hygroscopic oils have which characteristic?

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Prepare for the SkillCat EPA Type 2 Test with interactive flashcards and multiple-choice questions. Each question is accompanied by hints and explanations. Get ready to pass your exam!

Multiple Choice

Hygroscopic oils have which characteristic?

Explanation:
Hygroscopic describes something that readily attracts and holds moisture from the surrounding air. When an oil is hygroscopic, it will absorb moisture readily from the environment. This matters because absorbed water in refrigerant oil can react with refrigerants and additives, forming acids and promoting corrosion, sludge, and degradation of lubrication. So the defining characteristic is absorbing moisture readily. The other options describe no moisture uptake, absorbing oil, or moisture uptake only slowly, which don’t match how hygroscopic oils behave.

Hygroscopic describes something that readily attracts and holds moisture from the surrounding air. When an oil is hygroscopic, it will absorb moisture readily from the environment. This matters because absorbed water in refrigerant oil can react with refrigerants and additives, forming acids and promoting corrosion, sludge, and degradation of lubrication. So the defining characteristic is absorbing moisture readily. The other options describe no moisture uptake, absorbing oil, or moisture uptake only slowly, which don’t match how hygroscopic oils behave.

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