Answer :
It is a solution or mixture of several indicators....
it can undergo a large range of colour change ....
That colour directly indicates the exact Ph of a solution or substance,,,...
it is mostly used to test the acid or alkalis in a solution...
it can undergo a large range of colour change ....
That colour directly indicates the exact Ph of a solution or substance,,,...
it is mostly used to test the acid or alkalis in a solution...