Question
Question: Which of the following fraction of coal tar distillation is obtained at \[270^\circ - 360^\circ \] C...
Which of the following fraction of coal tar distillation is obtained at 270∘−360∘ C ?
A. Light oil
B. Middle oil
C. Green oil
D. Heavy oil
Solution
Oil which is used as a lubricant is not toxic, biodegradable and not expensive. This oil is generally blended with environmentally safe hydraulic fluids just like elevator oil, greases, bicycle oils and concrete form oil.
Complete step by step answer:
Green oil is the oil which is obtained at 270∘−360∘ C by distillation of coal tar. It has mainly anthracene and phenanthrene in it.
Hence, Option C is correct.
Green oil is actually a lubricant which is biodegradable, petroleum-free, less expensive and not toxic. Nowadays, in addition to chain saw oil, it is generally blended with environmentally safe hydraulic fluids just like elevator oil, greases, bicycle oils and concrete form oil.
ADDITIONAL INFORMATION:
Light crude oil is actually a liquid petroleum that has a low density and which flows freely at room temperature. It has a low viscosity, low specific gravity and high API gravity because of the existence of a high proportion of light hydrocarbon fractions. It has a low wax content.
Middle oil is that part of the distillate derived from coal tar which passes over between 170∘−230∘ C distinguished from the light oil, and the heavy oil or dead oil.
When someone quickly finds an oil leak, they will generally add a fluorescent green or red dye to that oil. This will also cause the dye to shine, highlighting the leak. That will allow for quick repairs.
Heavy oil can be defined as a type of crude oil which is characterized by an asphaltic, dense, viscous nature, and its asphaltene (generally very large molecules incorporating around 90 % of the sulphur and metals in the oil) content.
Note:
Green oil is the oil which is obtained at 270o−3000C by distillation of coal tar. It has mainly anthracene and phenanthrene in it.