Among the following compounds I-IV, which one forms a yellow

Question:

Among the following compounds I-IV, which one forms a yellow precipitate on reacting sequentially with (i) $\mathrm{NaOH}$ (ii) dil. $\mathrm{HNO}_{3}$ (iii) $\mathrm{AgNO}_{3}$ ?

  1. II

  2. IV

  3. I

  4. III


Correct Option: 2,

Solution:

Other compounds halide can't be removed because corresponding $\mathrm{C}^{+}$is highly unstable.

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