Chemistry What is the element that is in the highest percentage in the composition of the earth ? Silicon Oxygen Magnesium Iron Silicon Oxygen Magnesium Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid used in lead storage cells is Hydrochloric acid Nitric acid Phosphoric acid Sulphuric acid Hydrochloric acid Nitric acid Phosphoric acid Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry High concentration hydrocarbon pollutants in atmospheric air causes Reduced crop yield Silicosis Respiratory diseases (e.g.asthma) Cancer Reduced crop yield Silicosis Respiratory diseases (e.g.asthma) Cancer ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in making smoke bombs? Phosphorus Carbon Hydrogen Sulphur Phosphorus Carbon Hydrogen Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heavy metals got their name because compared to other atoms they have Higher densities Higher atomic radii Higher atomic masses Higher atomic numbers Higher densities Higher atomic radii Higher atomic masses Higher atomic numbers ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as anesthetic ? NO NO2 NH3 N2O NO NO2 NH3 N2O ANSWER DOWNLOAD EXAMIANS APP
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