Bioenvironmental Engineering (BEE) Block 4 Practice Test

Which designation indicates oil proof?

P N R H

Correct Answer:

Explanation:

Designation codes show whether a material or equipment is oil-proof. The letter P is the flag that signals oil-proof in this labeling scheme, so it directly indicates suitability for environments with oil exposure. That makes it the best choice when oil resistance is required. The other letters don’t convey oil-proof properties and refer to different characteristics, so they wouldn’t guarantee oil resistance. Always check the manufacturer’s specifications for the exact meaning of each designation in that item.

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