Question

what are natural indicator & synthetic indicator? give examples????

Answer 1

An indicator prepared from natural substances is known as natural indicator. Examples are Litmus, Turmeric, China rose petals, snowball plant, Red Cabbage and Grape Juice.
An indicator prepared from artificial substances is known as synthetic indicator Examples are Phenolphthalein and Methyl Orange.

Answer 2

natural indicator is obtained from nature
synthetic indicator is obtained from chemicals
examples are
natural indicator:red cabbage, litmus paper etc...
synthetic indicator:methyl orange, methyl red, etc..