⟩ Flash point of an oil gives an idea of the A. nature of boiling point diagram of the system. B. amount of low boiling fraction present. C. explosion hazards. D. all (a), (b) and (c)
Option A
Option A
Higher pressure in the reforming reactor A. increases coke formation. B. increases the rate of reaction. C. produces high octane number gasoline. D. none of these.
The main reaction in reforming is the A. dehydrogenation of naphthenes. B. hydrogenation of naphthenes. C. hydrocracking of paraffins. D. saturation of olefins.
Carbon percentage (by weight) in crude petroleum may be about A. 65 B. 75 C. 85 D. 95
Lane and Garton classification of petroleum is based on its A. composition B. specific gravity C. optical properties D. viscosity
With increase in the molecular weight of aromatic present in kerosene, its smoking tendency A. increases B. decreases C. remains same D. is unpredictable
Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel). A. 0.03 B. 3 C. 35 D. 70
Clay treatment is used to remove A. salt from the crude oil. B. colour & dissolved gases from cracked gasoline. C. wax from lube oil. D. none of these.
Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is A. more than 100 B. round about 100 C. between 50 and 100 D. less than 25
Pressure & temperature maintained in catalytic cracking is about A. 2atm & 500°C B. 10atm & 500°C C. 30atm & 200°C D. 50atm. & 750°C
Pick out the wrong statement. A. Pensky-Marten apparatus is used for determining flash points above 50°C. B. Characterisation factor of paraffinic crude oil is more than 12. C. Abel apparatus is used for determining flash points below 50°C. D. An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index.