CTEVT Prep
Practice
Question Bank
Mock Test
Papers
Guidance
AI Assist
Log In
Sign Up
Back to Practice
medium • Past Paper
Which of the following is used in the treatment of hard water?
Zeolite Bed
Hard Water In
(Ca2+, Mg2+)
Soft Water Out
(Na+ exchange)
A
Chlorine
B
Zeolite
C
Fluorine
D
Nitrogen