What is used to determine the density of liquids?
Show answer & explanation
Correct answer: B
Explanation
Correct Answer:
Option 2: Hydrometer
Explanation:
A hydrometer is used to measure the density or specific gravity of liquids. It works on Archimedes’ principle. The denser the liquid, the less it sinks; the lighter the liquid, the deeper it sinks. It is used in industries for testing milk purity, battery acid, and alcohol concentration.
Additional Facts:
Option 1: Lactometer measures milk purity.
Option 3: Ammeter measures electric current.
Option 4: Barometer measures atmospheric pressure.
Probable Exam Questions:
Q: Archimedes principle is related to what?
A: Buoyancy
Q: What is specific gravity?
A: Ratio of density
Q: What does ammeter measure?
A: Electric current
Q: What does barometer measure?
A: Atmospheric pressure