n the fractional distillation of crude oil, where is the hottest part of the fractionating column?*1 pointThe topThe middleThe bottomAny of the above

Which of the following statements about the process of fractional distillation is not correct? The temperature decreases going up the columnCrude oil is fed in near the bottom of the column as hot vapourThe different fractions condense into liquids when they reach the temperature of their boiling pointsThe fractions collected at the top contain hydrocarbons with the longest molecules

When crude oil is distilled using fractional distillation, 4 different pure liquids were obtained.   State the main factor in the crude oil mixture that allows the 4 liquids to be separated from one another.Read Lessdifference in their densitydifference in their coloursdifference in their boiling pintsdifference in their volumes

Which of the following is not obtained as a fraction during the refining of petroleum?1 pointKeroseneNatural gasLubricating oilDiesel

The order of appearance of the following with increasing temperature during the refining of crude oil isSelect an answerAKerosene, Gasoline, DieselBDiesel , Gasoline, KeroseneCGasoline, Kerosene, DieselDGasoline, Diesel, Kerosene

State the three stages of fractional distillation.