MCQOPTIONS
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				| 1. | 
                                    In flue gas analysis by Orsat's apparatus, oxygen is absorbed by | 
                            
| A. | potassium hydroxide. | 
| B. | cuprous chloride. | 
| C. | alkaline pyragllol solution. | 
| D. | none of these. | 
| Answer» D. none of these. | |