Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
MediumThe formula of the purple colour formed in $Lassaigne's$ test for sulphur using sodium nitroprusside is ......
- A$Na_4[Fe(CN)_5(NOS)]$
- B$Na[Cr(NH_3)_2(NCS)_4]$
- C$Na_2[Fe(CN)_5(NO)]$
- D$Na_3[Fe(CN)_5(NOS)]$
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Similar Questions
In the Lassaigne's test,the Prussian blue precipitate is formed due to the formation of which compound?
Medium
View SolutionSodium extract is heated with concentrated $HNO_3$ before testing for halogens because
DifficultJEE MAIN 2016
View SolutionWhen sodium fusion extract of an organic compound is boiled with iron$(II)$ sulphate solution followed by addition of concentrated $H_2SO_4$,it gives a Prussian blue colour. This confirms the presence of which element?
Which of the following nitrogen-containing compounds does not give Lassaigne's test?
Match column $-I$ and column $-II$ with the correct relation:
Column $-I$ Column $-II$ $(i).$ Lassaigne's test $(a).$ By sodium peroxide $(ii).$ Test for nitrogen $(b).$ Acidify with acetic acid $(iii).$ Test for sulphur $(c).$ Acidify with conc. sulphuric acid $(iv).$ Test for phosphorus $(d).$ Fusion with sodium
| Column $-I$ | Column $-II$ |
|---|---|
| $(i).$ Lassaigne's test | $(a).$ By sodium peroxide |
| $(ii).$ Test for nitrogen | $(b).$ Acidify with acetic acid |
| $(iii).$ Test for sulphur | $(c).$ Acidify with conc. sulphuric acid |
| $(iv).$ Test for phosphorus | $(d).$ Fusion with sodium |
Easy
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