Question

How will you test that ‘tea dust’ is not adulterated with iron powder?

Answer 1

Iron powder is a magnetic material and a magnet attracts a magnetic materials towards it. If we move a magnet over the tea dust containing iron powder in it, then the iron powder will get attracted towards the magnet. If this happens so, we can say that the tea dust is adulterated with iron powder. If not, then it is not adulterated with iron powder.