Question

name the substance which causes permanent hardness in water.
Please give asap.







I request you and if you don't know the answer then ease don't answer for just the sake of collecting points. ​

Answer 1

Answer:

Permanent hardness is caused by dissolved chloride, sulfate and nitrates of Calcium & magnesium

Explanation:

mark it as brainliest answer

Answer 2

POP when added with water called gypsum i.e

2Caso4.H20