Option A
Higher viscosity of lubricating oil usually signifies A. lower Reid vapour pressure. B. higher acid number. C. higher flash point and fire point. D. lower flash point and fire point.
The reservoir rock containing petroleum has A. low porosity B. high permeability C. high porosity D. both (b) and (c)
Penetration test determines the __________ of the grease. A. stiffness B. lubricating properties (e.g. oilness) C. service temperature D. variation in viscosity with temperature
Cetane number of high speed diesel must be ≥ A. 30 B. 45 C. 75 D. 95
LSHS is a type of furnace oil, which A. is more viscous than high viscosity furnace oil (HVFO). B. stands for low sulphur heavy stock. C. is an ideal fuel for metallurgical furnaces due to its lower sulphur content (< 1%). D. all (a), (b) and (c).
Hydro-fining is the most recent and effective method for the A. removal of sulphur. B. improvement of smoke point. C. reduction of breathing loss. D. improvement of viscosity index.
Fuel oil is subjected to visbreaking to reduce its A. pour point B. viscosity C. pressure drop on pumping D. all (a), (b) and (c)
Which is the most desirable component of a good quality kerosene? A. i-paraffins B. Aromatics C. n-paraffins D. Naphthenes
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
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