\[CoO.A{{l}_{2}}{{O}_{3}}\] is called

1.	\[CoO.A{{l}_{2}}{{O}_{3}}\] is called
A.	Cobalt aluminate
B.	Thenard's blue
C.	Both A and B
D.	None of these
Answer» D. None of these

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\[CoO.A{{l}_{2}}{{O}_{3}}\] is called

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