1. (a) changed first to red and then to blue In acid blue Litmus changes to Red. Generally, litmus are indicators. And in basic solution red litmus changes to Blue. Hence, Blue litmus first changes its colour to Red and then to Blue. Your answer will be option [A].

    (a) changed first to red and then to blue
    In acid blue Litmus changes to Red. Generally, litmus are indicators. And in basic solution red litmus changes to Blue. Hence, Blue litmus first changes its colour to Red and then to Blue. Your answer will be option [A].

    See less
    • 1