Q. In which of the following, NH_{3} is not used?
A) Tollen’s reagent
B) Nessler’s reagent
C) Group reagent for the analysis of IV group basic radicals
D) Group reagent for the analysis of III group basic radicals
Explanation
(b)
Potassium tetraiodo mercurate (II) ie K_{2}[HgI_{4}]dissolve in KOH solution to give Nessler’s reagent . Nessler’s reagent is used to test ${NH}_{4}^{+}$ions.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.