NEET Solved Paper 2019 Question 44
Question: The method used to remove temporary hardness of water is: [NEET 5-5-2019]
Options:
A) Ion-exchange method
B) Synthetic resins method
C) Calgon’s method
D) clark’s method
Show Answer
Answer:
Correct Answer: D
Solution:
- Clark?s method is used to remove temporary hardness $ Ca{{(HCO _3)}_2}+C{a^{+2}}orM{g^{+2}}\to CaCO _3 $ $ orMgCO _3+H _2O $
