See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

(I)     2 4 6 2 4KCN excess Fe 2KCN Fe CN K Fe CN          Fe(OH)2 is not soluble in excess NaOH and excess NH4OH (II) HgO is not soluble in excess NaOH and excess NH4OH   2 2 2 4 2KI Hg 2KI HgI K HgI      (III)   2 2 2 4 2KI Pb 2KI PbI K PbI        2 2 3 3 2 2 Pb H S PbS 2H 3PbS 8HNO 3Pb NO 2NO 3S 4H O           (IV)  2 KCN Ag KCN AgCN K Ag CN          For More Material Join: @JEEAdvanced_2024 AITS-CRT-II (Paper-1)-PCM(Sol.)-JEE(Advanced)/2023 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 6 2 2 2 3 3 2 Ag H S Ag S 2H 3 Ag S 8HNO 6 AgNO 2NO 3S 4H O          