Extraction of Metals - Result Question 17
17. The ore that contains both iron and copper is
(a) malachite
(b) azurite
(c) dolomite
(d) copper pyrites
(2019 Main, 9 Jan I)
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Answer:
Correct Answer: 17. (d)
Solution:
- The formulae of the given ores are as follows:
Malachite : $ CuCO _3 \cdot Cu(OH) _2$
Copper pyrites : $ CuFeS _2$
Dolomite : $CaMg\left(CO _3\right) _2$
Azurite : $Cu _3(CO) _3(OH) _2$
BETA
