⟩ Which of the following has the highest gum forming tendency in gosoline? A. Paraffins B. Diolefins C. Aromatics D. Naphthenes
Option B
Option B
Higher vapour pressure of gasoline indicates A. low flash point B. high breathing loss C. both (a) and (b) D. neither (a) nor (b)
Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil? A. Modern theory B. Carbide theory C. Engler theory D. all (a), (b) and (c)
Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known as A. α-methyl naphthalene. B. 2-2-4 tri methyl pentane. C. 1, 3 butadiene. D. tetra methyl ethylene.
In catalytic cracking, the A. gasoline obtained has a very low octane number. B. pressure & temperature is very high. C. gasoline obtained has very high aromatic content. D. gasoline obtained has very high amount of gum forming compounds.
Pour point of a petrofuel is A. multiple of 3°F. B. multiple of 5°F. C. 5°C below the temperature at which oil ceases to flow. D. none of these.
LPG stands for A. liquid petroleum gas B. liquified petrol gas C. liquid petrol gas D. liquefied petroleum gas
"Breathing loss" on storage of gasoline occurs due to the A. presence of unsaturated air. B. fluctuation of ambient temperature during day and night. C. both (a) and (b). D. neither (a) nor (b).
Which is an anticing compound? A. Amyl nitrate B. Alcohals C. Mercaptans D. Pyridine
The terminology used for the bottom most product from the vacuum crude distillation unit is A. residual crude B. residuum C. reduced crude D. petrolatum
Which of the following is the easiest to crack? A. Paraffins B. Olefins C. Naphthenes D. Aromatics