Do you know the difference between light naphtha & heavy naphtha ??

Here the answer

Naphtha refers to a mix. Of hydrocarbons forming a flammable liquid.It is produced from distillation of crude oil .

It has an initial boiling point (IBP) of about 35 °C and a final boiling point (FBP) of about 200 °C. it contains paraffin, naphthene (cyclic paraffins) and aromatic hydrocarbons ranging from those containing 5 carbon atoms to those containing about 12 carbon atoms.

It is distillated into two streams :

-light naphtha: containing most of the hydrocarbons with 5 to 6 carbon atoms with an IBP of about 30 °C and a FBP of about 145 °C.
-heavy naptha: containing most of the hydrocarbons with 7 to 12carbon atoms with an IBP of about 140 °C and a FBP of about 205 °C.

We can use heavy naphtha as feed to reforming unit to raise its octane number and use it as high-octane gasoline blending components.
Light naphtha can't be reformed . when reformed, tend to ----- into butane and lower molecular weight hydrocarbons which are not useful as high-octane gasoline blending components.
We can use it as feed to isomerization units to convert normal paraffins into their isomers and raise its
octane number.