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How will you test that ‘tea dust’ is not adulterated with iron powder? 82 E XEMPLAR PROBLEMS
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By using a magnet. If it has iron powder they will stick on to the magnet.
How will you test that ‘tea dust’ is not adulterated with iron powder? 82 E XEMPLAR PROBLEMS
By using a magnet. If it has iron powder they will stick on to the magnet.