Which description best defines API gravity in the context of fuels?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Study for the Junior Officer Surface Material Readiness Course Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which description best defines API gravity in the context of fuels?

Explanation:
API gravity describes the density of a petroleum liquid relative to water, typically measured at 60 °F. It’s derived from the liquid’s specific gravity to water and shown as API degrees; higher API gravity means the liquid is lighter than water, while lower API gravity means it’s heavier. This density-relative measure helps classify fuels and crude oils (light hydrocarbons have higher API gravity, heavy crudes have lower). The other options describe volatility (vapor pressure), boiling behavior (boiling point), or appearance (color), none of which define API gravity.

API gravity describes the density of a petroleum liquid relative to water, typically measured at 60 °F. It’s derived from the liquid’s specific gravity to water and shown as API degrees; higher API gravity means the liquid is lighter than water, while lower API gravity means it’s heavier. This density-relative measure helps classify fuels and crude oils (light hydrocarbons have higher API gravity, heavy crudes have lower). The other options describe volatility (vapor pressure), boiling behavior (boiling point), or appearance (color), none of which define API gravity.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy