Bauxite is the chief ore from which aluminum is extracted. which of these statements is correct about bauxite?

a.) its molecules are made up of a different number of atoms.
b.) its atoms do not arrange themselves in a definite order.
c.) it has a definite crystal structure.
d.) it does not have a definite chemical composition.

Answer : The correct answer is Option D.

Explanation:

Ores are defined as natural occurring substance from which metals and another mineral are extracted.

Bauxite is primary ore of an aluminium metal. it doesn't have definite or specific chemical composition. This is because it contains mixture of hydrous aluminum oxide, aluminum hydroxides, insoluble materials like hematite, quartz ,geothite ,magnetite etc.

From the given options the most appropriate statement which is correct about the bauxite is 'It does not have a definite chemical composition'.

Hence, the correct option Is (D).