Which instrument is used to measure temperature?

• A. Thermometer
• B. Fume Hood
• C. Volumetric Flask
• D. Funnel

Answer: (A)

Measuring temperature relies on a device designed to detect how hot or cold something is. A thermometer is the instrument used for that purpose. Classic thermometers use a liquid inside a glass tube that expands with temperature, moving along a calibrated scale to indicate the reading. Modern versions may use digital sensors that measure changes in electrical resistance to display temperature. The other items have different roles: a fume hood is for safely exhausting fumes, a volumetric flask is for precise liquid volume, and a funnel helps pour liquids. So the thermometer is the tool for measuring temperature.