Chemistry Petroleum is a mixture of Hydrocarbons Elements Polymers Salts Hydrocarbons Elements Polymers Salts ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron rusts quickly in River water Rain water Sea water Distilled water River water Rain water Sea water Distilled water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Soap is prepared by boiling caustic soda with Fats Kerosene oil Alcohol Glycerine Fats Kerosene oil Alcohol Glycerine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the atmosphere is mainly caused by Hydrogen sulphide Sulphur dioxide Nitrogen dioxide Chlorofluorocarbon Hydrogen sulphide Sulphur dioxide Nitrogen dioxide Chlorofluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas that usually causes explosions in coal mines is Carbon monoxide Methane Air Hydrogen Carbon monoxide Methane Air Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Oxygen which is vital for life is a product of photosynthesis and comes from Carbon dioxide Carbonates from soil Oxides of mineral elements Water Carbon dioxide Carbonates from soil Oxides of mineral elements Water ANSWER DOWNLOAD EXAMIANS APP
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