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:From what are carbonaceous types of sedimentary…Assuming that brown colour is dominant over black…Assuming that in sheep, the allele for black coat…Locally produced soap in which wood ash is used as…You may have the pencil; but you can't have the…