Question

How can phenolphthalein and turmeric be used as indicators

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Answer 1

Answer:

Natural Indicator: Indicators that are obtained from naturally occurring substance are called NATURAL INDICATORS. Example: litmus, turmeric, China rose, etc. Synthetic Indicator: Indicators that are made in laboratory are called SYNTHETIC INDICATORS. Example: phenolphthalein, methyl orange, etc.

Answer 2

Turmeric:

if we put a drop acid on turmeric then it will change from yellow to red. thereby it acts as indicator.

phenolphthalein:

if we drop acid in the solution of base, then solution will become colourless from pink.

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