Question
Chemistry Question on water
Permanent hardness cannot be removed by
A
Using washing soda
B
Calgon’s method
C
Clark’s method
D
Ion exchange method
Answer
Clark’s method
Explanation
Solution
The correct answer is (C) : Clark’s method.
Permanent hardness cannot be removed by
Using washing soda
Calgon’s method
Clark’s method
Ion exchange method
Clark’s method
The correct answer is (C) : Clark’s method.