Correct Answer - Option 1 : Bitumen emulsion
Bitumen:
Bitumen is a petroleum product obtained by the distillation of petroleum crude oil. Bitumen is hydrocarbon material of either natural of pyrogenous origin, found in gaseous, liquid semisolid or solid form. Bituminous material is widely used in road construction and maintenance.
Bitumen emulsion:
It is a condition in which bitumen is suspended in an aqueous medium. It is used for Patch-up work.The biggest advantage of bitumen emulsion is that it can be used in rainy season also.
Cutback bitumen:
Cutback bitumen is a type of bitumen which is obtained when viscosity of bitumen is reduced by volatile diluent. It is generally used in colder regions.
Coal tar:
Tar is also a bituminous material obtained by the destructive distillation of coal or wood.It has the same appearance as bitumen but both have different characteristics.