I don't quite understand what you mean by HB-2 pencil but if you mean HB pencil / #2 Pencil it is not the softest pencil. Pencils scale from 9H to 9B, (HB in the middle) and 9B would the softest and darkest pencil there.
Depends on what you are doing. HB is just the mechanical pencil designation for #2 lead in wooden pencils. If you were doing artistic drawing you would probably want something softer/darker, if you were doing precision engineering drawings you would probably want something harder/lighter. HB/#2 leads do make a very good general purpose lead.
Pencil lead does not have coal. Pencil lead contains graphite.
If your asking if the pencil has Lead, then the answer is that most pencils do NOT have lead in them anymore.
Pencil lead is made of graphite and clay. Newer recipes for pencil lead use waxy polymers to bind the graphite to produce a lead that does not snap when the pencil is flexed.
Due to the fact that most pencil lead is graphite, you can't get lead poisoning. :)
To dissolve pencil lead from the skin, place the pencil in a container of H2O2 and it should dissolve in a day or 2.
I don't quite understand what you mean by HB-2 pencil but if you mean HB pencil / #2 Pencil it is not the softest pencil. Pencils scale from 9H to 9B, (HB in the middle) and 9B would the softest and darkest pencil there.
There are about 20 grades of pencils from 9H the hardest, to F being the softest
lead pen because a lead pencil is a regular pencil.
Pencil lead does not have coal. Pencil lead contains graphite.
lead pencil is incorrect because it lead pencil
there is no lead in lead pencil.
There is no lead in pencil - Pencil is made from graphite
Pencil lead is a compound
Pencil lead isn't really lead, it is graphite, a form of carbon. Pencil lead doesn't have any lead in it whatsoever.
The formula for pencil lead is c3,h2o
we get lead of pencil from the mixture of clay and graphite
The lead pencil was invented on 1564.