Finally I posted the quote of the whole school term.
Had QA challenge today. Finished the supposed 4 hour session in 1 hour, due to my godliness. By the way, the unknown we were working on is unknown G.
And the answer for unknown G is: CuO, KI, ZnSO4.
The answer for unknown D is: FeCl2, ZnCl2, CuCO3. Which is the same as unknown E or F.
The answer for unknown C is: CaCO3, ZnSO4, FeSO4. Though there is a possibility that one of the cation present in Cl- instead. Oh well I never do that unknown, but supposedly it's like that.
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