engineering chemistry MCQ #3100

What is the purpose of adding lime to water?

engineering chemistry MCQ #3100

  1. Question 1

    Q1. What is the purpose of adding lime to water?

    • A) To remove hardness
    • B) To increase pH
    • C) To remove turbidity
    • D) To decrease pH

    Answer: To remove hardness

    Explanation: Lime (CaO) reacts with CO2 and HCO3- to form CaCO3, reducing water hardness