The specific gravity of a liquid is the ratio of its density to the density of:
Correct answer: B. Water at a specified reference condition
- A. Mercury at standard conditions
- B. Water at a specified reference condition
- C. Air at standard conditions
- D. The surrounding soil
Explanation
Specific gravity compares a substance's density with the density of a reference substance, commonly water for liquids. It is dimensionless because both quantities have the same units.
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About Hydraulics and Water Resources
Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
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