A) \[NaCN,N{{a}_{2}}S,NaCl\]
B) \[KCN,{{K}_{2}}S,KCl\]
C) \[AgCl,NaCN,{{K}_{2}}S\]
D) \[NaNC,FeS{{O}_{4}},KCl\]
Correct Answer: A
Solution :
In Lassaignes solution, If N is present in organic compound, it is present as NaCN in Lassaignes solution. If S is present in organic compound then in Lassaignes solution, it is present as \[\text{N}{{\text{a}}_{\text{2}}}\text{S}\text{.}\] If N and S both are present in organic compound then in Lassaignes solution these are present as \[\text{NaSCN}\text{.}\] If halogens are present in organic compound then in Lassaignes solution. halogens are present as \[\text{NaX}\] (NaCI, NaBr, Nal).
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