MCQOPTIONS
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| 1. |
A 25 ml sample was diluted to 250 ml with odourless distilled water so that the odour of the sample no longer perceivable. What was the Threshold odour number ? |
| A. | 11 |
| B. | 10 |
| C. | 25 |
| D. | 05 |
| Answer» C. 25 | |