

MCQOPTIONS
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1. |
1 ppm = ____________ |
A. | 0.07 <sup>0</sup>Fr |
B. | 0.7<sup>0</sup>Fr |
C. | 0.1<sup>0</sup>Fr |
D. | 0.01<sup>0</sup>Fr |
Answer» D. 0.01<sup>0</sup>Fr | |