Which of the following statements are true regarding the hardness of water?…
2023
Which of the following statements are true regarding the hardness of water?
(A) It is caused by ions of Calcium and Magnesium.
(B) It is of two types—temporary and permanent.
(C) Permanent hardness of water can be easily removed by boiling.
(D) It creates scales in hot water pipe systems.
(E) It reduces the consumption of soap.
Choose the correct answer from the options given below :
- A.
Only (A), (B), (C) and (D)
- B.
Only (A), (B) and (D)
- C.
Only (B), (C), (D) and (E)
- D.
Only (C), (D) and (E)
Attempted by 6 students.
Show answer & explanation
Correct answer: B
Water hardness is caused by calcium and magnesium ions, creating temporary and permanent types. Permanent hardness cannot be removed by boiling but causes scale in pipes. Hard water increases soap consumption rather than reducing it.