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1. |
In what ratio should 30% potassium nitrate solution be mixed with 60% potassium nitrate solution to get result as 40% potassium nitrate in the solution?A. 2 : 1B. 3 : 1C. 1 : 3D. 4 : 5 |
A. | A |
B. | C |
C. | D |
D. | B |
Answer» B. C | |