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Which colour appears when few drops of phenolphthalein are put into a test tube containing lime water?
  • a)
    Yellow
  • b)
    Pink
  • c)
    Orange
  • d)
    Colourless
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which colour appears when few drops of phenolphthalein are put into a ...
  • The chemical compound phenolphthalein has the formula C20H14O4 and is commonly abbreviated as "HIn" or "phph" in shorthand notation.
  • Phenolphthalein is frequently used as an indicator.
  • It's a phthalein dye, which means it's a type of dye.
  • Phenolphthalein in Acidic solutions turns colourless
  • Phenolphthalein in basic solutions turns pink in colour. 
Explanation:
  • Lime water is basic in nature. 
  • Calcium hydroxide is the chemical term for lime water, which has the formula Ca(OH)2.
  • When Phenolphthalein, it turns pink as lime water is basic in nature.
  • Hence, the correct answer is - Pink.
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Which colour appears when few drops of phenolphthalein are put into a test tube containing lime water?a)Yellowb)Pinkc)Oranged)ColourlessCorrect answer is option 'B'. Can you explain this answer?
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