everyday science MCQ #2057

A hydrometer is the device that measures:

everyday science MCQ #2057

  1. Question 1

    Q1. A hydrometer is the device that measures:

    • A) The acidity of water
    • B) The pollution in water
    • C) The specific gravity of a liquid
    • D) The gravity of milk

    Answer: The specific gravity of a liquid

    Explanation: A hydrometer measures the specific gravity (relative density) of liquids by the principle of flotation — it floats higher in denser liquids; it is used to test battery acid, milk, and alcohol.