A) Violet
B) Pink
C) Canary yellow
D) Green
Correct Answer: C
Solution :
Phosphates give canary yellow precipitate with ammonium molybdate in the presence of conc. \[HN{{O}_{3}}\] \[{{H}_{3}}P{{O}_{4}}+12{{(N{{H}_{4}})}_{2}}Mo{{O}_{4}}+21HN{{O}_{3}}\] \[\underset{\text{(canary yellow ppt}\text{.)}}{\mathop{\underset{\text{ammonium phosphomolybdate}}{\mathop{{{(N{{H}_{4}})}_{3}}P{{O}_{4}}.12Mo{{O}_{3}}}}\,}}\,+21N{{H}_{4}}N{{O}_{3}}+12{{H}_{2}}O\]
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