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Which of the following is/are correct for potassium ferrocyanide ? 

(A) It gives a brown precipitate with Cu2+ ions. 

(B) It gives a white precipitate of mixed salt with Ca2+ ions. 

(C) It in excess gives a bluish white precipitate with Zn2+ 

(D) It develops a deep red colouration with Fe3+ 

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(A) It gives a brown precipitate with Cu2+ ions. 

(B) It gives a white precipitate of mixed salt with Ca2+ ions. 

(C) It in excess gives a bluish white precipitate with Zn2+ 

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