Question

Find odd man out 1. Phenolphthalein 2.methyl orange 3. Litmus 4.universal indicator

Answer 1

Among the four options, the odd one is

3. Litmus

Although all the four options are pH indicators and are used for finding out the pH of an unknown substance by changing colors, thus show whether the compound is acidic or basic, only Litmus paper is a natural indicator which is extracted from Lichen plants.

All the other indicators are synthetic and are prepared from chemicals.

Answer 2

" 3 "

Litmus odd one out from given.

This is beacuse except litmus all are synthetic acid base indicators.

Litmus is natural occurring acid base indicator.