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Practical Organic Chemistry question

2016 · 10 Apr · Shift 1 · Q8
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Practical Organic Chemistry question

2016 · 10 Apr · Shift 1 · Q8

JEE MainChemistryPractical Organic ChemistryMCQ+4 / −1
Sodium extract is heated with concentrated HNO3HNO_3HNO3​ before testing for halogens because :
  1. A
    Silver halides are totally insoluble in nitric acid.
  2. B
    Ag2SAg_2SAg2​S and AgCNAgCNAgCN are soluble in acidic medium.
  3. C
    S2−S^{2-}S2− and CN−CN^-CN−, if present, are decomposed by conc. HNO3HNO_3HNO3​ and hence do not interfere in the test.
  4. D
    Ag reacts faster with halides in acidic medium.
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