A) Argentite
B) Haematite
C) Malachite
D) Calamine
Correct Answer: C
Solution :
Argentite : \[A{{g}_{2}}S\] Haematite : \[F{{e}_{2}}{{O}_{3}}\] Malachite :\[Cu{{(OH)}_{2}}.CuC{{O}_{3}}\] Calamine : \[ZnC{{O}_{3}}\]
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