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| Q.74 | Statement-I: Calcium and Magnesium dissolved in water are two most common minerals that make water hard. Statement-II: Hard water requires more soap and synthetic detergents for home laundry and washing. | |
| Ans | 1. Statement-I is true but Statement-II is false. | |
| 2. Both the Statements are false. | ||
| 3. Statement-I is false but Statement-II is true. | ||
| 4. Both the Statements are true. |
Correct Ans Provided: 4
