...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper...

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Transcript of ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper...

Page 1: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 2: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 3: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 4: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 5: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 6: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 7: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 8: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 9: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou
Page 10: ...Words written on paper using aqueous ammonium thiocyanate, NH4SCNò are invisible. When the paper is brushed with aqueous iron (Ill) chloride; the words appear blood-red in colou