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During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with difficulty in ( NH ₄ OH ) solution when sodium carbonate extract was first acidified with dil. ( HNO ₃ ) and then ( AgNO ₃ ) solution was added. This indicates presence of :

Options

  1. A( Br ⁻ )
  2. B( I ⁻ )
  3. C( Cl ⁻ )
  4. D( CO ₃ ²⁻ )

Correct answer

A. ( Br ⁻ )

Step-by-step solution

array ll Ag ⁺+ I ⁻ AgI & Yellow ppt. Ag ⁺+ Cl ⁻ AgCl & White ppt Ag ⁺+ Br ⁻ AgBr & Pale yellow ppt array

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