See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

(A) 8 | | | | | | O O O O O O O Si O Si O Si O                  (B) HF reacts with glass, so it is used to make marking on the glass (etching). (C) Since Fe3+ reacts with KCNS to produce red colour. So, it can be used as an indicator in the titration of Fe3+ with Sn2+. (D)   3 4 2 2 2 Greenish yellow Pb O HCl PbCl H O Cl      AITS-OT-II (Paper-2)-PCM(Sol.)-JEE(Advanced)/21 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 13