Question 45
Density and UpthrustA hydrometer is an instrument for measuring the
- A.depth of water in a vessel
- B.relative density of a liquid by the method of flotation
- C.relative density of a liquid by finding the apparent loss in weight
- D.relative humidity of the air
- E.atmospheric pressure when the air is humid.
Show the answer and explanation
Answer: B (relative density of a liquid by the method of flotation)
Explanation
A hydrometer floats in the liquid, and how deep it sinks shows the liquid's relative density.