Which of the following devices are used to measure pressure? i. Aneroid barometer. ii. hydrometer. iii. hygrometer. iv. manometer.
Answer Details
The devices that are used to measure pressure are aneroid barometer and manometer. An aneroid barometer measures atmospheric pressure, while a manometer is used to measure the pressure of gases and liquids. A hydrometer measures the density of a liquid, while a hygrometer measures the humidity of the air. Therefore, options i and iv are the correct ones that indicate the devices used to measure pressure.