Concentration of fluorine that cause a phototoxicological effect on th – McqOptions

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1.	Concentration of fluorine that cause a phototoxicological effect on the plant is ___________
A.	0.1 g/m<sup>3</sup>
B.	0.3 g/m<sup>3</sup>
C.	0.5 g/m<sup>3</sup>
D.	1 g/m<sup>3</sup>
Answer» C. 0.5 g/m<sup>3</sup>

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