Question

what are indicators ?give eg for natural indicators

Answer 1

indicator are those substance which are used for identify which is acid and which is base

pH scale is example of natural indicator .

blue Litmus

methyl orange

phenolphthalein etc .

Answer 2

indicators are usually that are used to describe and assess the water quality and temperature and dissolved oxygen some examples of natural indicators are red cabbage , turmeric, onion, beetroot etc.