Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
MediumWhich compound is responsible for the formation of a blue precipitate when ferric ions react with a Lassaigne's extract or potassium ferrocyanide solution?
- A$K_4[Fe(CN)_6]$
- B$Fe_4[Fe(CN)_6]_3$
- C$KMnO_4$
- D$Fe(OH)_3$
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Similar Questions
Which of the following compounds is added to the sodium extract before the addition of silver nitrate for the testing of halogens?
The Lassaigne's extract is boiled with conc. $HNO_3$ while testing for halogens. By doing so it
MediumAIPMT 2011
View SolutionNitrogen can be estimated by Kjeldahl's method for which of the following compounds?
In the detection of halogens,what is formed by adding $AgNO_3$? What is its colour?
Easy
View SolutionIdentify the binary mixture$(s)$ that can be separated into individual compounds by differential extraction,as shown in the given scheme.
$(A)$ $C_6H_5OH$ and $C_6H_5COOH$
$(B)$ $C_6H_5COOH$ and $C_6H_5CH_2OH$
$(C)$ $C_6H_5CH_2OH$ and $C_6H_5OH$
$(D)$ $C_6H_5CH_2OH$ and $C_6H_5CH_2COOH$
$(A)$ $C_6H_5OH$ and $C_6H_5COOH$
$(B)$ $C_6H_5COOH$ and $C_6H_5CH_2OH$
$(C)$ $C_6H_5CH_2OH$ and $C_6H_5OH$
$(D)$ $C_6H_5CH_2OH$ and $C_6H_5CH_2COOH$
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