In photo-extinction method, a source of light is directed through a s

1.	In photo-extinction method, a source of light is directed through a suspension of ____________
A.	Kerosene in cement
B.	Cement in kerosene
C.	Cement in water
D.	Water in cement
Answer» C. Cement in water

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In photo-extinction method, a source of light is directed through a suspension of ____________

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