InterviewSolution
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InterviewSolution
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14. A student take 10 mL of rain water in test tube A and 1 g of calcum sulphate addedto 10 m of distiled water in test tube B He added drops of soap solution to boh Aand B. After shaking both the test tubes equal number of time what did the studentobserve? |
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Answer» Rainwater is generally soft. So it will produce foam. However calcium ions in test tube B will make water hard, due to which less foam will be produced. |
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