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All ores are minerals while all minerals...

All ores are minerals while all minerals are not ores because :

A

The metal can’t be extracted economically from all the minerals

B

Minerals are complex compounds

C

The minerals are obtained from mines

D

All of these are correct

Text Solution

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The correct Answer is:
A
All ores are minerals, while all minerals are not ores because every mineral is not suitable for the extraction of the metal. This is because the mineral may contain low concentration of metal or may contain a large concentration of impurities which may not be easy to remove or process of extraction may not be feasible or commercially viable
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Explore conceptually related problems

(a) All ores are minerals but all minerals are not ores. Justify. (b) An iron knife kept in blue copper sulphate solution turns the blue solution into light green. Explain. (c ) An athlete won a bronze medal in a race competition. After some days, he found that the medal had lost its lustre due to the formation of a greenish layer on it. Name the metals present in the medal. What is the reason for the formation of a greenish layer on its surface ?

Statement-1: All ores are minaerals but all minerals are not ores. Statement-2: Minerals are obtained from mines.

Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically. Reason (R): All ores are minerals but all minerals are not ores.

A mineral is called an ore if :

A : All the diverse minerals element found in plants are not essential for them. R : Some plants accumulate heavy and toxic minerals such as gold and selenium from the soil.