H20 is hard if it contains (a) NaHCO3 (b) MgSO4 (c) KCl (d) NaCl H20 is hard if it contains (a) NaHCO3 (b) MgSO4 (c) KCl (d) NaCl November 13, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
