Assertion: In an acid-base titration involving strong base and a weak acid, methyl orange can be used as an indicator. Reason: Methyl orange changes its colour in pH range of 7 to 9. Assertion: In an acid-base titration involving strong base and a weak acid methyl orange can be used as an indicator. Reason: Methyl orange changes its colour in pH range of 7 to 9. November 16, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 7 - Equilibrium , Chemistry , Facebook Messenger WhatsApp Share this:TwitterFacebook Related