Chemistry The main active constituent of tea and coffee is caffeine chlorophyll aspirin nicotine caffeine chlorophyll aspirin nicotine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical that is used to ripen mangoes is Calcium carbonate Calcium chloride Calcium sulphide Calcium carbide Calcium carbonate Calcium chloride Calcium sulphide Calcium carbide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a greenhouse gas ? Carbon dioxide Hydrogen Nitric oxide Chlorofluorocarbon Carbon dioxide Hydrogen Nitric oxide Chlorofluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following minerals is found in pure form? Manganese Iron Bauxite Copper Manganese Iron Bauxite Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals can displace copper from copper sulphate solution ? Iron Gold Mercury Platinum Iron Gold Mercury Platinum ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element required for solar energy conversion ? Beryllium Ultra pure carbon Silicon Tantalum Beryllium Ultra pure carbon Silicon Tantalum ANSWER DOWNLOAD EXAMIANS APP
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