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A steel needle when placed carefully on water can be made to float

      

A steel needle when placed carefully on water can be made to float. When detergent is added to the water it sinks. Explain this observation.

  

Answers


John
The steel needle will sink when detergent are added because impurities weakens surface tension
johnmulu answered the question on January 16, 2017 at 12:33


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