A. thermometer
B. hydrometer
C. spring balance
D. beaker
Correct Answer:
Option B – hydrometer
Explanation
Thermometer is used to measure temperature
Hydrometer is used to measure relative density of liquid.
Spring balance is used to measure the weight of an object
Beaker is used to measure or take volume of a liquid
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![A simple barometer is constructed using a liquid Q1 of density 16.2g/cm³. Calculate the least length of the tube to be used to measure the pressure of 1.5atm. [Density of mercury = 13.6g/cm³, 1atm = 76.0 cm of Mercury]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A simple barometer is constructed using a liquid Q1 of density 16.2g/cm³. Calculate the least length of the tube to be used to measure the pressure of 1.5atm. [Density of mercury = 13.6g/cm³, 1atm = 76.0 cm of Mercury]")