Nishi, a student of chemistry, observed some suspicious movements in her neighbourhood people and one day saw packets of ammonium nitrate in their hand. As a student of chemistry she knew that ammonium nitrate is used in explosives. She immediately informed the police and they were caught. Comment on brief: (a) the value (s) displayed by Nishi (b) name the gas evolved on heating ammonium nitrate. Write the chemical reaction. (c) write two uses of ammonium nitrate.