Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
MediumIn a Lassaigne's test for sulphur in an organic compound,the purple colour formed with sodium nitroprusside solution is due to the formation of:
- A$[Fe(CN)_5NOS]^{4-}$
- B$[Fe(CN)_5S]^{2-}$
- C$[Fe(CN)_5NOS]^{2-}$
- D$[Fe(CN)_6]^{4-}$
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Name the methods used for determining the molecular mass of organic compounds.
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MediumAIPMT 1994
View SolutionWhich 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 |
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