Option B
Research octane number refers to the A. low octane number motor fuels. B. high octane number motor fuels. C. high octane number aviation fuels. D. unleaded motor fuels.
Pick out the wrong statement. A. Multigrade lubricating oils have high viscosity index. B. Paraffinic oil has very high viscosity index. C. Naphthenic oil has very low viscosity index. D. High viscosity index means a large change in viscosity with change in temperature.
Alkylation A. causes olefins to combine with each other. B. causes olefins to combine with iso-paraffins. C. converts iso-paraffin into olefin. D. converts olefin into paraffin.
Which of the following has the maximum °API gravity of all? A. Diesel B. Kerosene C. Petrol D. Furnace oil
Sulphuric acid treatment of petroleum products removes the __________ materials. A. gum forming B. color forming C. asphaltic D. all (a), (b) & (c)
Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2. A. 1.5 B. 3 C. 6 D. 12
Which is the most effective catalyst used in catalytic cracking of petroleum products? A. Iron oxide B. Nickel C. Vanadium pentoxide D. Zeolite
Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency? A. Paraffins B. Naphthenes C. Aromatics D. Iso-paraffins
Which of the following processes consumes hydrogen? A. Fluid catalytic cracking B. Visbreaking C. Propane deasphalting D. None of these
Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of __________ kcal/kg. A. 600-750 B. 250-350 C. 1000-1500 D. 2000-2500
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