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P Block Elements question

2011 · Q123
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P Block Elements question

2011 · Q123

NEETChemistryP Block ElementsMCQ+4 / −1
The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it
  1. A
    decomposes Na2S and NaCN, formed
  2. B
    helps in the precipitation of AgCl
  3. C
    increases the solubility product of AgCl
  4. D
    increases the concentration of N3−_3^ -3−​ ions
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