RRB Technician 2013 Ques 13
Question: Temporary hardness of water can be removed
Options:
A) by passing $ CO _2 $
B) by passing $ SO _2 $
C) by adding $ Ca{{(OH)}_2} $
D) by adding $ NaCl $
Show Answer
Answer:
Correct Answer: C
Solution:
- Temporary hardness of water can be removed by dark’s process. In this process, water is treated with a calculated quantity of lime.
BETA
