Coal contains mostly , but it also has hydrogen, oxygen, sulphur and nitrogen, as well as some inorganic constituents like mineral and water. It is black because it has many such impurities that gives this specific colouration.

structure of coal

Generally, a rock that is black is made up of crystals that are rich in Iron and Magnesium. This is NOT the case with this rock (____________), which is instead rich in Silicon and Aluminum.  Its pitch-black, shiny appearance is due to the ABSENCE of crystals - it is pure GLASS. It forms from magma that is so gooey that elements cannot "move around" through it to arrange themselves into crystals.Group of answer choicesobsidiangranitebasaltpumice

What type of coal contains the least amount of carbon?lignitebituminousanthracitepeat

Arrange the types of coal based on the carbon content present in it, from the highest to the lowest.

True or False: Coal deposits are a type of hydrocarbon resources that form from organic material derived from dead microorganisms in deep-marine settings.Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.aTruebFalse