Q18 / 180 · KCET 2025 · Chemistry

The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so, it

  • A
    helps in precipitation of AgCl
  • B
    increases the solubility of AgCl
  • C
    increases the concentration of $\mathrm{NO}_3^{-}$ion
  • Correct answer
    D
    decomposes $\mathrm{Na}_2 \mathrm{~S}$ and NaCN , if formed

Solution

It is done so that if there is any $\mathrm{Na}_2 \mathrm{~s}$ or NaCN , it can be decomposed.

Hence, the correct answer is option: 'D'.

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