API gravity compares the weight of fuel to the weight of water of the same volume. This comparison helps determine whether the fuel is which of the following?

API gravity compares the weight of fuel to the weight of water of the same volume. This comparison helps determine whether the fuel is which of the following?

• A. Heavier Or Lighter Than Water
• B. More Viscous Than Water
• C. More Flammable Than Water
• D. Has Higher Vapor Pressure Than Water

Answer: (A)

API gravity is a density-based measurement that compares a fuel’s weight to the weight of an equal volume of water. Since water has an API gravity of 10, liquids with API gravity above 10 are lighter than water and will tend to float, while liquids with API gravity below 10 are heavier than water and will tend to sink. This is exactly how you determine whether the fuel is heavier or lighter than water. The property doesn’t address viscosity, flammability, or vapor pressure, which are governed by other characteristics and tests.

API gravity is a density-based measurement that compares a fuel’s weight to the weight of an equal volume of water. Since water has an API gravity of 10, liquids with API gravity above 10 are lighter than water and will tend to float, while liquids with API gravity below 10 are heavier than water and will tend to sink. This is exactly how you determine whether the fuel is heavier or lighter than water. The property doesn’t address viscosity, flammability, or vapor pressure, which are governed by other characteristics and tests.