MCQOPTIONS
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| 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 | |