Question 760 Deck General

70% to pass

Which flash point would indicate a grade D combustible liquid?

A 40°F
B 95°F
C 79°F
D 155°F
AI Explanation

The correct answer is B) 95°F. The flash point of a combustible liquid is the lowest temperature at which it can vaporize to form an ignitable mixture in air. According to the regulations for the US Coast Guard Captain's License Examinations, a grade D combustible liquid has a flash point between 80°F and 150°F. Therefore, a flash point of 95°F would indicate a grade D combustible liquid. The other options are incorrect because 40°F is too low for a combustible liquid (this would be a flammable liquid), 79°F is just below the range for a grade D combustible liquid, and 155°F is too high for a grade D combustible liquid (this would be a higher grade, such as grade E or F).

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