⟩ Cetane number of diesel used in trucks may be about A. 50 B. 14 C. 35 D. 85
Option A
Option A
Octane number (unleaded) of reformed gasoline may be upto A. 60 B. 70 C. 80 D. 90
Which of the following is not a sulphur compound present in petroleum? A. Thiophenes B. Mercaptans C. Sulphones D. Pyroles
Which of the followingis desirable in petrol (gasoline) but undesirable in kerosene? A. Paraffins B. Aromatics C. Mercaptans D. Naphthenic acid
The conductivity of crude oil-water mixture depends on the A. pH value B. water percentage C. temperature D. all (a), (b) and (c)
Cracking is A. an exothermic reaction. B. an endothermic reaction. C. favoured at very low temperature. D. none of these.
Which of the following is not an important property of fuel oil/furnace oil? A. Sulphur content B. Viscosity C. Aniline point D. Flash point
Smoke point of kerosene is the A. time after which smoking starts on burning. B. temperature at which smoking starts. C. maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp. D. none of these.
Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene. A. smoke point B. paraffins C. aromatics D. naphthenes
Asphalts are A. low molecular weight & low boiling point compounds present in petroleum. B. desirable in catalytic cracking feedstock, because they produce coke. C. readily oxidisable and form carbonaceous sludge. D. all (a), (b) & (c).
Products drawn from the top to bottom of the crude oil distillation column has progressively increasing A. boiling points B. molecular weight C. C/H ratio D. all (a), (b) and (c)