A) Pyrolusite
B) Malachite
C) Diaspore
D) Cassiterite
Correct Answer: B
Solution :
Malachite-basic copper carbonate\[CuC{{O}_{3}}.Cu{{(OH)}_{2}}\] is a carbonate ore Pyrolusite \[=Mn{{O}_{2}}\] Diaspore \[=A{{l}_{2}}{{O}_{3}}.{{H}_{2}}O\] Tin-stone \[=Sn{{O}_{2}}\]
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