Question

the hardness of water is caused by
1.caso4
2.cacl2
3.mg(hco3)2
4.all of these

Answer 1

Answer:

Temporary hardness is caused due to a- CaSO4 b- CaCL2 c- Ca(HCO3)2 D- CaCO3

Answer 2

Answer:

There are two types of hardness :

• Temporary hardness which includes carbonate and hydrogen carbonate of Ca and Mg
• Permanent hardness, chloride and sulphate salt of Ca and Mg

So, here option 4 will be correct...