date:Sep 07, 2012
dded to it and it is shaken. A few drops of HCl are added to it. A turmeric paper strip is dipped in it. If it turns red, boric acid is present.
Wheat/bajra and other grains
Ergot
(i) Purple black longer-sized grains in bajra show the presence of ergots (fungi that contain poisonous substances)
(ii) Some grains are put in a glass tumbler containing 20 per cent salt solution (20gm common salt to 100ml water). Purple black longer-sized grains of ergots floats over the surface, while the sound