sblock Elements - Result Question 1
####1. The temporary hardness of a water sample is due to compound
(2019 Main, 12 April II)
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 1. (d)
Solution:
- The temporary hardness of a water sample is due to compound
[i.e. ]. Boiling of this sample converts [i.e. to compound i.e. . Generally, temporary hardness is due to presence of magnesium and calcium hydrogen carbonates. It can be removed by boiling. During boiling, the soluble is converted into insoluble and changed to insoluble . These precipitates can be removed by filteration.