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NEET levelSingle correct optionDifficulty 1 of 3qa186

A phosphate solution is warmed with ammonium molybdate in the presence of conc. $HNO X_{3}$ . The precipitate formed is

Acanary yellow
Bpale green
Cwhite
Dbrick red

Answer: A

Phosphate forms ammonium phosphomolybdate,

(NH X_{4}) X_{3} [P (Mo X_{3} O X_{10}) X_{4}]

, which is a canary yellow precipitate. The other colours are not associated with this test.

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