Phenolphthalein is an indicator, used to indicate and point of neutralisation reaction. It give pink colour in an alkalies and ______ in an acid.
فینولفتھیلین ایک اشارے ہے ، جو غیرجانبدارانہ رد عمل کی نشاندہی کرنے اور اس کی نشاندہی کرنے کے لئے استعمال ہوتا ہے۔ یہ ایک الکلیوں میں گلابی رنگ اور تیزاب میں ______ دیتا ہے۔
Answer: Colourless
Explanation
- Phenolphthalein is a pH indicator that changes color in response to changes in acidity or basicity.
- In an acidic medium, it is colorless, and in a basic medium, it turns pink.
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