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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
Gangue is an ore contaminated with undesired materials
b
The scientific and technological process used for isolation of the metal from its ore is known as metallurgy
c
Minerals are naturally occurring chemical substances in the earth's crust
d
Ores are minerals that may contain a metal
answer is A.
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