Iron is rendered passive by the action of (a) Conc. H2SO4 (b) Conc. H3PO4 (c) Conc. HCl (d) Conc. HNO3 Iron is rendered passive by the action of (a) Conc. H2SO4 (b) Conc. H3PO4 (c) Conc. HCl (d) Conc. HNO3 December 2, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related