Question

wch of the following is not an indicator 1.digene 2. methyl orange 3.litmus 4.phenolphthalein

Answer 1

1:-DIGENE IS NOT AN INDICATOR

Answer 2

Methyl orange and phenolphthalein use as indicator , In Acidic solution Methyl orange gives red colour but in basic solution it gives yellow colour . In Acidic solution phenolphthalein is colourless but in basic it gives pink colour . They both are used as a pH indicator .

1 digene is not a indicator