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Fe^(3+) ions react with potassium thioc...

`Fe^(3+)` ions react with potassium thiocyanide to give :

A

yellow ppt

B

blue colouration

C

blood red colouration

D

black ppt.

Text Solution

Verified by Experts

The correct Answer is:
C
`FeCl_3 + underset("Pot. sulphocyanide")(3KCNS) to underset("Blood red colouration")(Fe(CNS)_3) + 3KCI`
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MODERN PUBLICATION-APPENDIX A-Multiple Choice Questions (Level-I)
  1. The group reagent for group III is:

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  2. As2S3 is soluble in yellow ammonium sulphide due to the formation o...

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  3. Fe^(3+) ions react with potassium thiocyanide to give :

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  4. Acidic solution of a salt produced deep blue colour with starch and p...

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  5. On heating a metal chloride with K2Cr2O7 and conc. H2SO4, the gas evol...

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  6. The aqueous solution of a salt gives white ppt. with lead acetate solu...

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  7. Pb^(2+) belongs to :

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  8. Disodium hydrogen phosphate is used to test :

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  9. Which of the following pair is precipitated with (NH4)2CO3 in the pres...

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  10. Solution of ZnS in dil HCl , when treated with NaOH solution , a white...

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  11. Which of the following sulphide is not soluble in dil. HNO3 ?

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  12. A colourless salts gives grassy green colour in bunsen flame, it may b...

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  13. KCN is used for the separation of :

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  14. Ammonia gas when passed through Nessler's reagent , forms a brown prec...

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  15. Chlorides react with conc. H2SO4 and evolve :

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  16. Equivalent weight of an acid may be expressed as :

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  17. Which of the following statement is not correct ?

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  18. Fe , Al and Cr are grouped together in qualitative analysis because :

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  19. Fe drops of conc. HNO3 are added to group II filtrate before proceedin...

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  20. An inorganic salt when heated evolves a colourless gas which bleaches ...

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