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Q.

Sodium nitroprusside Na2[Fe(CN)5NO] is used as reagent for detection of ___________ and the compound formed is ___________.
 

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a

Sulphur, Na2[Fe(CN)5NOS]

b

Sulphur, Na4 [Fe(CN)5NOS]
 

c

Nitrogen, Na4[Fe(CN)6]
 

d

Sulphur, Na2[Fe(CN)4NOS]
 

answer is A.

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Detailed Solution

Na2[Fe(CN)5NO] + Na2S → Na4[Fe(CN)5NOS] violet colour, Sulphur is confirmed.
Hence, the correct answer is (1).

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Sodium nitroprusside Na2[Fe(CN)5NO] is used as reagent for detection of ___________ and the compound formed is ___________.