Which of the following combination will produce H2 gas (a) Fe metal and conc. HNO3 (b) Cu metal and conc. HNO3 Which of the following combination will produce H2 gas (a) Fe metal and conc. HNO3 (b) Cu metal and conc. HNO3 November 28, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related