1.

Assertioin: Silicate minerals are seldon used for hte extraction of a metal. Reason: Silicate minerals are very rare.

Answer»

Both A and R ar true and R is the CORRECT explanation of A
Both A and R are true but R is not a correct explanation ofA
A is true but R is false
A is false but R is true

Solution :Silicate minerals are very COMMON, however due to their less reactivity and high cost of extraction of METALS from them, they are SELDOM used as ores.


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