The specific gravity of propane liquid is which value?

The specific gravity of propane liquid is which value?

• A. 0.75
• B. 0.51
• C. 1.00
• D. 0.60

Answer: (B)

Specific gravity compares a liquid’s density to that of water, so SG equals density of the liquid divided by the density of water (water is about 1.0 g/cm3). Propane in its liquid form is lighter than water, with a density around 0.50 g/cm3 near its boiling point. That puts its SG around 0.5. The closest value among common options is 0.51. Values near or above 1.0 would mean a density equal to or greater than water, which propane liquid does not have, and numbers like 0.60 or 0.75 are simply higher than the actual density.

Specific gravity compares a liquid’s density to that of water, so SG equals density of the liquid divided by the density of water (water is about 1.0 g/cm3). Propane in its liquid form is lighter than water, with a density around 0.50 g/cm3 near its boiling point. That puts its SG around 0.5. The closest value among common options is 0.51. Values near or above 1.0 would mean a density equal to or greater than water, which propane liquid does not have, and numbers like 0.60 or 0.75 are simply higher than the actual density.