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1. |
A container contains 20 L mixture in which there is 10% sulphuric acid. Find the quantity of sulphuric acid to be added in it to make the solution to contain 25% sulphuric acid. |
A. | 3 L |
B. | 4 L |
C. | 2 L |
D. | 5 L |
Answer» C. 2 L | |