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28. When HCOOH acid is heated with concentrated sulphuric acid the gas evolved is 1) only CO2 2)CO+CO2 3)SO2+CO2 4)CO |
| Answer» 28. When HCOOH acid is heated with concentrated sulphuric acid the gas evolved is 1) only CO2 2)CO+CO2 3)SO2+CO2 4)CO | |