Hardness of water is mainly due to the presence of
A.
calcium hydroxide or magnesium hydroxide
B.
calcium trioxocarbonate (IV) or calcium tetraoxosulphate (VI)
C.
sodium hydroxide or magnesium hydroxide
D.
calcium chloride or sodium chloride salts
Correct Answer: Option B
Explanation
Salts of Calcium and Magnesium are responsible for hardness of water. Bicarbonates, Carbonates, Chlorides and Sulfates of Calcium and Magnesium causes temporary and permanent hardness.
Contributions ({{ comment_count }})
Please wait...
Modal title
Report
Block User
{{ feedback_modal_data.title }}