Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the following are the ores of copper? (1) Chalcopyrite (2) Malachite (3) Chalcocite (4) HaematiteA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: A
Solution :
Ore Chemical composition Chalcopyrite \[CuFe{{S}_{2}}\] Malachite \[Cu{{(OH)}_{2}}.CuC{{O}_{3}}\] Chalcocite \[C{{u}_{2}}S\] Hematite \[F{{e}_{2}}{{O}_{3}}\]
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