Chemistry Which one of the following mineral does not contain oxygen ? Calcite Cryolite Haematite Bauxite Calcite Cryolite Haematite Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silicon is used in All of these Solar energy devices Transistors Semiconductors All of these Solar energy devices Transistors Semiconductors ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Leaded gasoline Tobacco Insecticides Sewage Leaded gasoline Tobacco Insecticides Sewage ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following acids serves as an electrolyte in a lead storage battery? Hydrochloric acid Sulphuric acid Lactic acid Nitric acid Hydrochloric acid Sulphuric acid Lactic acid Nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used for refrigeration? Chlorine Sulphur dioxide Freon Phosphine Chlorine Sulphur dioxide Freon Phosphine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rusting of iron takes place due to Oxidation Carbonation Exfoliation Corrosion Oxidation Carbonation Exfoliation Corrosion ANSWER DOWNLOAD EXAMIANS APP
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