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25-11-2019
Chemistry

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2. If you had three unknowns which are starch, BaSO4, and MgO, how can you identify starch among them ?

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25-11-2019

Answer:

A chemical test for starch is to add iodine solution (yellow/brown) and look for a colour change. In the presence of starch, iodine turns a blue/black colour

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