Which technique among the following, is most appropriate in separation of a mixture of $$100 \,\mathrm{mg}$$ of $$p$$-nitrophenol and picric acid ?
In base vs. acid titration, at the end point methyl orange is present as
Match List I with List II
List I | List II | ||
---|---|---|---|
(A) | N$$_2$$(g) + 3H$$_2$$(g) $$ \to $$ 2NH$$_3$$(g) | (I) | Cu |
(B) | CO(g) + 3H$$_3$$(g) $$ \to $$ CH$$_4$$(g) + H$$_2$$O(g) | (II) | Cu/ZnO $$ - $$ Cr$$_2$$O$$_3$$ |
(C) | CO(g) + H$$_2$$(g) $$ \to $$ HCHO(g) | (III) | Fe$$_x$$O$$_y$$ + K$$_2$$O + Al$$_2$$O$$_3$$ |
(D) | CO(g) + 2H$$_2$$(g) $$ \to $$ CH$$_3$$OH(g) | (IV) | Ni |
Choose the correct answer from the options given below :
Given below are two statements :
Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.
Statement II : If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and Na2S.
In the light of the above statements, choose the most appropriate answer from the options given below :