Food test to test the presence of water in a food sample
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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. Observe the colour of the mixture.
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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. Observe the colour of the mixture.
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