| Which of the statements given below is/are correct? Permanent hardness of water is due to the presence of soluble |
| 1. Chloride of calcium |
| 2. Bicarbonate of calcium |
| 3. Sulphate of magnesium |
| 4. Bicarbonate of magnesium |
| Select the correct answer using the codes given below |
A) Only 1
B) 1 and 3
C) 2 and 4
D) 1, 2 and 3
Correct Answer: B
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