cobalt nitrate test:-

on adding 2 drps. of Co(NO3)2 to white residue after charcoal cavity test. Blue colour indicates presence of Al3+

 

borax bead test:-

for iron:-

oxidiing flame:yellowish brown whwn hot, pale yellow whwn cold,

reducing flame:-green,hot and cold

chromium:oxidiing flame & reducing flame:green

 

if u require for wet tests, plz ask