Petroleum Refinery Engineering MCQs

methanol in Unisol process.

naphthenic acid in Mercapsol process.

both (a) and (b).

neither (a) nor (b).

low molecular weight & low boiling point compounds present in petroleum.

desirable in catalytic cracking feedstock, because they produce coke.

readily oxidisable and form carbonaceous sludge.

all (a), (b) & (c).

resistance to knock.

ignition delay.

ignition temperature.

smoke point.

heavy distillates

intermediate distillates

light ends

residues

Diesel

Kerosene

Petrol

Furnace oil

high pressure & temperature.

low pressure & temperature.

high pressure and low temperature.

high temperature and low pressure.

decrease in paraffin content.

increase in thermal energy per unit weight.

increase in aromatic content.

higher H/C ratio.

Paraffins

Aromatics

Mercaptans

Naphthenic acid

an exothermic reaction.

an endothermic reaction.

favoured at very low temperature.

none of these.

low boiling sulphur compounds.

added in LPG cylinders to detect gas leakage by its smell.

undesirable in petrol, as they reduce its octane number.

all (a), (b) and (c)