MCQOPTIONS
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| 1. |
30 litres of 78% of a concentrated acid solution is to be prepared. How many litres of 90% concentrated acid needs to be mixed with 75% solution of concentrated acid to get the result? |
| A. | 10 |
| B. | 6 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |