Q. A substance which gives a yellow precipitate when boiled with an excess of nitric acid and ammonium molybdate and red precipitate with $AgNO_{3}$ is
A) Orthophosphate
B) Pyrophosphate
C) Metaphosphate
D) Hypophosphate
Explanation
(a)
Orthophosphate + Amm. Molybdate $\underset{\mathrm{\Delta}}{\overset{{HNO}_{3}}{\rightarrow}}$ yellow ppt
$\downarrow \ + AgNO_{3}$
Red ppt
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.