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In Lassagine's test, when both N and S a...

In Lassagine's test, when both N and S are present, blood red colour is obtained. This is due to the formation of :

A

Ferric ferrocyanide

B

Ferric cyanide

C

Ferric thiocyanate

D

Ferric hydroxide.

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The correct Answer is:
C
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MODERN PUBLICATION-APPENDIX A-Multiple Choice Questions (Level-I)
  1. Ag2S is soluble in NaCN due to the formation of :

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  2. A solution contains Cu(CH3COO)2. Cd(CH3COO)2 and Zn(CH3COO)2. On pass...

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  3. In Lassagine's test, when both N and S are present, blood red colour i...

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  4. Lassaigne's solution gives violet colouration with sodium nitroprussid...

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  5. Belstein's test is used for the detection of :

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  6. The prussian blue colour in the test of nitrogen by Lassagine's soluti...

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  7. Leibig method is used for the estimation of

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  8. For the detection of sulphur by Lassaigne's test, the addition of sodi...

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  9. In Lassaigne's test for N, the blue colour is due to the formation of ...

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  10. In the detection of halogen, nitric acid is added to the Lassaigne's e...

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  11. Sodalime test for detection of nitrogen cannot be used for :

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  12. In case N and S are also present along with halogen in the organic com...

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  13. Which of the following pairs has heat of neutralisation equal to -57.1...

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  14. Which of the following neutralisation reaction is most exothermic ?

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  15. The heat of neutralisation of strong acid and strong base is 57.0 kJ. ...

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  16. During the test of N in an organic compound by Lassaigne's extract, pr...

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  17. Equal volumes of 1M HCl and 1M H2SO4 are neutralised by dilute NaOH so...

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  18. The heat of neutralisation of HCl and NaOH is 57.3 kJ "mol"^(-1). The ...

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  19. Which of the following is a lyophobic colloid?

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  20. Which of the following is a hydrophilic colloidal solution?

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