Methyl
Orange, Phenolphthalein,
litmus paper etc
What are they
akirasoman626:
acid base indicators...the first and second are artificial and the third is natural
Answers
Answered by
7
these are used to identify the gas which is evolved or the solution eg. acids turn blue litmus to red
Answered by
2
they are acid base indicators.
they shows that which substance is acid or have.
hope it helps.....
please mark me as brainliest answer.....
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