thermal dissociation वाक्य

Thermal dissociation of ammonia yields an inexpensive mixture of hydrogen and nitrogen.
He was researching contact oxidation of ammonia, naphthalene and anthracene, mechanism of ammonia oxidation on platinum at low temperatures, reduction of iron dioxide by a methane, methods of obtaining aluminium oxide from Polish kaolinite and aluminosilicate, use of Polish anhydrite and gypsum deposit to production sulfuric acid and cementum, kinematics of thermal dissociation.