Identification using precipitation reactions

You want to identify a component using a precipitation reaction. In all cases an aqueous solution in a test tube is used.
Which method are you going you use?
A. Test using silver nitrate
B. Test using sodium hexanitrocobaltate(III)
C. Test using potassium antimonate(V)
D. Test using sodium monohydrogenphosphate
E. Test using barium chloride
F. Test using ammonium molybdate
 
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