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Grade: 11
        
The ore that contains both iron and copper is:
(1) malachite
(2) dolomite
(3) azurite
(4) copper pyrites
please ans it fast and also please tell the formulae of each??????please.........
one month ago

Answers : (3)

Arun
21573 Points
							
Copper pyrites :    CuFeS2 Malachite :      Cu(OH)2. CuCO3 Azurite :        Cu(OH)2 .  2CuCO3   Dolomite :    CaCO3 . MgCO3
 
Hence option 4 is correct.
one month ago
Mayank
368 Points
							
Copper pyrites : CuFeS2
Malachite : Cu(OH)2 . CuCO3
Azurite Cu(OH)2 . 2CuCO3
Dolomite CaCO3 . MgCO3
the correct ans is 4 option as you can clearly see that copper pyrites contain both iron , copper and in fact it also contains sulphur.........
one month ago
Ambuj Surjan
29 Points
							
Copper pyrite-CuFeS2
Azurite-2CuCO3.Cu(OH)2
Malachite-CuCO3.Cu(OH)2
Dolomite- MgCO3.CaCO3
Well the answer for the above question is option 4 that is copper pyrite it is an ore containing iron copper and sulphur. 
 
 
one month ago
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