Class/Course - Class XI

Subject - Chemistry

Chapter - The p-Block Elements


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Q.1 Al salts on heating with Na2CO3 in charcoal cavity gives a white infusible residue. On moistening the same with a drop of cobalt nitrate, it changes to ___ due to the formation of cobalt meta-aluminate (Thenards blue)
  Brown
  Yellow
  Blue
  Lemon