⟩ Tell me the key design issues of a computer Network?
☛ Connectivity
☛ Cost-effective Resource Sharing
☛ Support for common Services
☛ Performance
☛ Connectivity
☛ Cost-effective Resource Sharing
☛ Support for common Services
☛ Performance
Visbreaking process is used mainly for making A. high cetane diesel B. high octane gasoline C. fuel oil D. smoke free kerosene
Viscosity index of a lubricating oil A. is the measure of its flash point. B. is the measure of variation of viscosity with temperature. C. should be low. D. none of these.
Smoke point of a test sample of kerosene is found to be 15 mm. On removal of __________ from it, the smoke point rises to 25 mm. A. n-paraffins B. olefins C. aromatics D. none of these
__________ is not an important refinery process for upgrading the quality of lubricating oil. A. Deoiling B. Solvent refinning C. Clay treatment D. Hydrotreatment
Pick out the undesirable property for a solvent meant for dewaxing of lube oil. A. Complete miscibility with oil. B. High solubility of wax in the solvent. C. Both (a) and (b). D. Neither (a) nor (b).
Which of the following is used as a catalyst in fluidised bed catalytic cracking? A. Silica-magnesia B. Silica-alumina C. Bentonite clays D. All (a), (b) and (c)
Casing head gasoline is the liquid A. butane. B. propane. C. natural gas. D. gasoline separated from wet natural gas by compression.
Most commonly used crude heater before the fractionation tower in a refinery is the __________ heater. A. electric immersion B. pipestill C. steam coil D. none of these
Pour point and freezing point is equal for A. petrol B. diesel C. water D. crude petroleum
Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about A. 0.1 B. 1 C. 2.5 D. 3.5