Lampblack or soot is used as a filler in the manufacture of rubber tyres.
As it is a bad conductor of heat and electricity, it is used as a filler in the manufacturing of rubber tyres.
Lamp black is an amorphous allotrope of Carbon.
The property of an element due to which it exists in different physical forms which have identical chemical properties but different physical properties are called allotropy. The different physical forms of that element are called as allotropes. Example: Carbon is an element that shows the property of allotropy because it exists in different physical forms that have identical chemical properties but different physical properties.
Non-crystalline or amorphous allotropic forms: The allotropes in which the constituent particles are not arranged in a particular pattern. Example: coal, charcoal, lamp black etc