| Q.1 | The hardness of water is due to the presence of salts of which of the following? | |
| Ans | A. Calcium and Magnesium | |
| B. Potassium and Sulphur | ||
| C. Magnesium and Potassium | ||
| D. Potassium and Calcium |
Correct Ans Provided: A
Date: 08/09/2021 Shift: 8:30 AM – 10:30 AM Q. No: 181
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