This video lecture from Transition Elements (F.Sc. second year Chemistry) covers: The chromates and dichromates of potassium. the chemical and physical properties and the methods for preparation. The strong oxidizing power of these chromium compounds and the effects on various compounds. Formation of chromyl chloride and the test for presence of chlorine. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.