The device used to measure a lead-acid cell's relative density is called a
A) hydrometer
B) hygrometer
C) densiometer
D) calorimeter

Question

Quizplus · Accepted Answer

A hydrometer is specifically designed to measure the relative density of liquids, and is commonly used to measure the acid concentration in lead-acid batteries. Hygrometers measure humidity, densiometers measure density, and calorimeters measure the heat released or absorbed during a chemical reaction.

The Device Used to Measure a Lead-Acid Cell's Relative Density