phenolphthalein meaning in Urdu

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Use of phenolphthalein in Sentence [16 examples]

1) phenolphthalein Noun
A laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colourless below pH 8	ایک سفید قلمی مرکب جس سے تیزاب بے رنگ ہو جاتے ہیں