a student was asked to take 10 ml of rain water in a test tube a and 1 gram of calcium sulphate of 210 ml of distilled water in a test tube if he added a couple of drop of soap solution to both A and B after shaking both the test you equal number of time what did the student observe
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Explanation:
He will observe that there will be a change of colour from Brown to green and the product will be calcium hydrosulphide
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