Which of the following is a synthetic indicator?
1) China rose
2) Litmus
3) Phenolphthalein
4) Turmeric
Answers
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Answer:
phenolphthalein
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Answer:
3)Phenolphthalein is the answer.
Phenolphthalein is the correct answer and it is a synthetic acid- base indicator.
colourless in acid and pink(magenta) in base.
The rest are natural indicators.
China rose:- Acid- dark pink Base- green
Turmeric:- Acid:- Yellow Base- Red
Litmus:- Acid- red Base -Blue
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