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During the test for halogens, sodium ext...

During the test for halogens, sodium extract is first boiled with nitric acid as to

A

Decompose NaCN and `Na_2S`

B

Make silver halides insoluble

C

Increase the solubility of `AgNO_3`

D

dissolve AgCN

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The correct Answer is:
A
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AAKASH SERIES-PURIFICATION OF ORGANIC COMPOUNDS AND IUPAC NOMENCLATURE-LECTURE SHEET (EXERCISE - I (STRAIGHT OBJECTIVE TYPE QUESTIONS))
  1. When N and S both are present in an organic compound, the sodiun fusio...

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  2. The sodium fusion extract of an organic compound on acidification with...

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  3. During the test for halogens, sodium extract is first boiled with nitr...

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  4. Copper wire test for halogens is known as

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  5. In which of the following compounds, nitrogen cannot be tested by Lass...

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  6. A compound which does not give a positive test in Lassaigne.s test for...

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  7. In the Duma's method for the estimation of nitrogen in an organic comp...

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  8. In the estimation of sulphur in an organic compound, fuming nitric aci...

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  9. In the estimation of nitrogen by Duma's method 1.18g of an organic com...

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  10. In organic compounds, phosphorus is estimated as:

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  11. Kjeldahl's method cannot be used for the estimation of nitrogen in

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  12. An organic compound contains C = 40%, H = 13.33% and N = 46.67%. Its e...

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

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  14. The violet colour obtained during the test of sulphur Lassaigne's test...

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  15. Which of the following compounds gives blood red colouration when its ...

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  16. An organic compound which produces a bluish green coloured flame on he...

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  17. Fractional crystallization is carried out to separate

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  18. Mixture of nitrobenzene and aniline can be separated by

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  19. Two substances when separated on the basis of partition coefficient be...

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  20. Absolute alcohol can be prepared from rectified spirit by

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