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                              Q:
                           
                           
                                                      | A) by heating excess of ethanol with conc. H2SO4 at 140°C | B) by treating with conc. H2SO4 at room temperature | 
| C) by treating with conc. H2SO4 at 273 K | D) by heating Ethanol with excess of conc. H2SO4 at 443 K | 
                              Answer:   A) by heating excess of ethanol with conc. H2SO4 at 140°C
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
 
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