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The violet colour in the Lassaigne’s tes...

The violet colour in the Lassaigne’s test of sulphur is due to

A

`Na_(2)[Fe(CN)_(5)S]`

B

`Na_(2)[Fe(CN)_(5)NO]`

C

`Na_(2)[Fe(CN)_(6)]`

D

`Na_(4)[Fe(CN)_(5)NOS]`

Text Solution

Verified by Experts

The correct Answer is:
D
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OP TANDON-CHARACTERISATION OF ORGANIC COMPOUNDS -OBJECTIVE QUESTIONS Level-A
  1. Prussian blue colour is obtained by mixing together aqueous solution o...

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  2. The blood red colour in the combination test of nitrogen and sulphur i...

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  3. The violet colour in the Lassaigne’s test of sulphur is due to

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  4. At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air...

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  5. Mark the incorrect statement in nitrogen Kjeldhal's method of estimati...

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  6. In the estimation of carbon and hydrogen, if the substance also contai...

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  7. In the estimation of carbon and hydrogen, if the substance also contai...

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  8. In Duma's method for estimation of nitrogen. 0.25 g of an organic comp...

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  9. 0.30g of an organic compound containing C, H, and O an combustion yiel...

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  10. In Carius method of estimation of halogens 250 mg of an organic compou...

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  11. In Dumas' method of estimation of nitrogen 0.35 g of an organic compou...

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  12. An organic compound 'A', containing C,H,N and O, on analysis gives 49....

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  13. An alkaloid contains 17.28% of nitrogen and its molecular mass is 162....

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  14. 1.2g of organic compound on kjeldahlization librates ammonia which con...

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  15. Which of the following reagents is used for the separation of acetalde...

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  16. In the estimation of sulphur by carius method, 0.468 gm of an organic ...

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  17. The ammonia evolved from the treatment of 0.30g of an organic compoun...

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  18. In the Kjeldahl's method for estimation of nitrogen present in a soil ...

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  19. An organic compound having molecular mass 60 is found to contain C = 2...

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  20. A compound containing only carbon, hydrogen and oxygen has molecular m...

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