Chemistry The green colour seen in firework displays is due to the chloride salt of : Barium Strontium Calcium Sodium Barium Strontium Calcium Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heavy metals got their name because compared to other atoms they have Higher atomic masses Higher atomic numbers Higher atomic radii Higher densities Higher atomic masses Higher atomic numbers Higher atomic radii Higher densities ANSWER DOWNLOAD EXAMIANS APP
Chemistry What material is used to make electric heater coil ? Silver Iron Nichrome Copper Silver Iron Nichrome Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief constituent of natural gas is: Helium Methane Nitrogen Propane Helium Methane Nitrogen Propane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main constituent of biogas is Acetic acid Methyl alcohol Oxygen Methane Acetic acid Methyl alcohol Oxygen Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by CO2and CFCs SO2 and particulates SO2 and NO2 NO2and particulates CO2and CFCs SO2 and particulates SO2 and NO2 NO2and particulates ANSWER DOWNLOAD EXAMIANS APP
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