how to show the presence of water in food item ?
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Put the food item into a test tube. Add 10 drops of water and shake the test tube. Using a dropper add two drops of copper sulfhate solution to the test tube. Add 10 drops of caustic soda solution and shake the test tube.
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Put the food item into a test tube. Add 10 drops of water and shake the test tube. Using a dropper add two drops of copper sulphate solution to the test tube. Add 10 drops of caustic soda solution and shake the test tube.
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