Question

Complete the following sentence.

The stem of a hydrometer is made narrow because it _______its sensitivity.

• A. $increases$
• B. $decreases$
• C. $independent$
• D. $ca{n}^{\prime }tsay$

Answer 1

The correct option is A $increases$

Hydrometer is an instrument used for determining the density of a liquid. It usually consists of a glass float with a long thin stem which is graduated. The glass float is a large hollow bulb which increases the buoyancy so that the hydrometer floats. The narrow stem increases the sensitivity of the hydrometer. The bottom of the hydrometer is made heavier by loading it with lead shots so that it floats vertically.