When a mixture containing phosphate is heated with conc. \( \mathrm{HNO}_{3} \) and ammonium mol...

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When a mixture containing phosphate is heated with conc. \( \mathrm{HNO}_{3} \) and ammonium molybdate solution, a canary yellow precipitate is formed. The formula of the yellow precipitate is:
(a) \( \left(\mathrm{NH}_{4}\right)_{3} \mathrm{PO}_{4} \)
(b) \( \left(\mathrm{NH}_{4}\right)_{3} \mathrm{PO}_{4} \cdot 12 \mathrm{MoO}_{4} \)
(c) \( \left(\mathrm{NH}_{4}\right)_{3} \mathrm{PO}_{4} \cdot 12 \mathrm{MoO}_{3} \)
(d) \( \left(\mathrm{NH}_{4}\right)_{3} \mathrm{PO}_{4} \cdot\left(\mathrm{NH}_{4}\right)_{2} \mathrm{MO}_{4} \)
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