question_answer

Sodium extract is heated with concentrated \[HN{{O}_{3}}\] before testing for halogens because :   JEE Main Online Paper (Held On 10 April 2016)

A) Ag reacts faster with halides in acidic medium.

B) Silver halides are totally insoluble in nitric acid.

C) \[A{{g}_{2}}S\]and \[AgCN\] are soluble in acidic medium.

D) \[{{S}^{2-}}\]and \[C{{N}^{-}},\]if present, are decomposed by conc. \[HN{{O}_{3}}\]and hence do not interfere in the test.