API gravity is necessary for the calculation of specific gravity of petroleum products, because

API gravity is necessary for the calculation of specific gravity of petroleum products, because Correct Answer Volume of the petroleum products changes with temperature

Since volume of petroleum products changes significantly with temperature, that means density of petroleum products changes significantly with temperature, so that’s why specific gravity of petroleum products changes with temperature, and that’s why API gravity is required.
Bissoy MCQ

Related Questions

Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).
Increase in the specific gravity of petroleum products indicates