Q. The reagent commonly used to determine hardness of water titrimetrically is
A) Oxalic acid
B) Sodium thiosulphate
C) Sodium citrate
D) Disodium salt of EDTA
Explanation
(d)
It forms calcium and magnesium complex with EDTA salt
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.