°API gravity of water at N.T.P. is about__________________?
Correct answer: C. 10
- A. 0
- B. 1
- C. 10
- D. 100
Explanation
API gravity is calculated as 141.5 divided by specific gravity at 60°F, minus 131.5. For water, whose specific gravity is approximately 1, this gives about 10°API.
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