⟩ With increase in the number of carbon and hydrogen atoms in hydrocarbon molecules, the density of petroleum products A. decreases B. increases C. remains same D. unpredictable from the data
Option B
Option B
In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen A. enhances the desulphurisation process. B. minimises coke formation. C. both (a) and (b). D. neither (a) nor (b).
The yield of straight run LPG from crude oil is about __________ weight percent. A. 20-25 B. 1-1.5 C. 10-15 D. 0.1-0.2
Smoke volatility index is equal to smoke point plus A. 0.42 x(% distilled at 204°C) B. 5 mm C. 0.84 x (% distilled at 204°C) D. 10 mm. approximately
Deoiling is the process of removal of oil from wax. It is done by the __________ process. A. solvent extraction B. sweating C. resettling D. all (a), (b) & (c)
Waxes present in petroleum products A. can be separated out by distillation. B. are not soluble in them. C. crystallise out at low temperature. D. decrease their viscosity.
Mercaptans are added to liquefied petroleum gas (LPG) to A. reduce its cost. B. narrow down its explosion limit. C. assist in checking its leakage from cylinder. D. increase its calorific value.
Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is A. 1 B. 2 C. 3 D. 4
Isomerisation converts the __________ tot-paraffin's. A. paraffins B. olefins C. naphthenes D. none of these
Doctor's solution used for sweetening of petroleum products is A. sodium plumbite B. sodium sulphite C. sodium thiosulphate D. lead sulphate
Smoke point of kerosene expresses its A. burning characteristics. B. luminosity characteristics. C. aromatic content directly. D. lamp wick wetting characteristics.