A. Acid
B. Solvent extraction
C. Alkali
D. Clay
Advertisement
Related Mcqs:
- 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...
- 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...
- A multigrade lubricating oil means an oil having high __________________?
- A. Viscosity index B. Viscosity C. Aniline point D. Flash point...
- Paraffins are desirable in lubricating oil, as it has got high_____________________?
- A. Viscosity B. Viscosity index C. Smoke point D. Pour point...
- ____________ is not an important refinery process for upgrading the quality of lubricating oil ?
- A. Deoiling B. Solvent refining C. Clay treatment D. Hydro-treatment...
- During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) ________________ with increase in the amount of water?
- A. Decreases B. Increases C. Remains unchanged D. Decreases linearly...
- Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about _______________ °C ?
- A. 50 B. 70 C. 90 D. 140...
- Maximum viscosity of tar/PCM/fuel oil for easy and efficient atomisation in conventional burner is _______________ centistokes (or 100 Redwood I seconds) ?
- A. 5 B. 25 C. 50 D. 100...
- Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher ______________ compared to the dry natural gas?
- A. Unsaturated hydrocarbon content B. Calorific value C. Quantity of propane D. Quantity of butane...
- Crude oil is transported inland from oil field to refineries, mainly by the _____________________?
- A. Road tankers B. Rail tankers C. Underground pipelines D. None of these...
Advertisement
