1.

Define (i) mineral (ii) ore. Aluminium occurs in combined state whereas gold is found in free state in nature. Why ?

Answer»

Solution :The elements or compounds which OCCUR naturally in the earth.s crust are known as MINERALS.
The minerals from which a particular metal can be profitable EXTRACTED is called ore.
Gold is very less reactive whereas aluminium is a more reactive element. Therefore, aluminium reacts with other elements or compounds more than gold. Thus, aluminium occurs in COMBINED state while gold occurs in free state.


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