A. 50
B. 70
C. 90
D. 140
Related Mcqs:
- 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 - Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?
A. PCM
B. Tar
C. Light diesel oil
D. Low viscosity furnace oil - Which of the following is not an important property of fuel oil/furnace oil ?
A. Sulphur content
B. Viscosity
C. Aniline point
D. Flash point - Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely miscible. It means that the aniline point of the diesel is _______________ the room temperature?
A. More than
B. Less than
C. Same as
D. Either more or less; depends on the room temperature - Crude oil produced by Indian oil fields are predominantly _______________ in nature?
A. Paraffinic
B. Naphthenic
C. Asphaltic
D. Mixed base - ________________ treatment is done for appreciable improvement in viscosity index of lubricating oil?
A. Acid
B. Solvent extraction
C. Alkali
D. Clay - 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 - Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about_________________?
A. 0.1
B. 1
C. 2.5
D. 3.5 - 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. - 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
