A soft; black opaque carbonaceous rock that can be used to make pencil is? by Sunday | Jan 1 | Geography JAMB | 0 comments A. lignite B. graphite C. lead D. coal Correct Answer: Option B – graphite Users Also Read These:A black market can occur when?Soft iron is used in making the armature of an…Assuming that brown colour is dominant over black…Which of the following allotrope of carbon is a…The term lead pencil is a ________; pencils are…