Chemistry The rusting of iron is a/an Electrochemical change Electrical change Physical change None of these Electrochemical change Electrical change Physical change None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The common refrigerant in domestic refrigerator is Freon Oxygen Neon Nitrogen Freon Oxygen Neon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry This group of alumino-silicate minerals is widely used in making electrical insulators Mica Chromite Bauxite Manganese Mica Chromite Bauxite Manganese ANSWER DOWNLOAD EXAMIANS APP
Chemistry A powerful eye irritant present in smog is Nitric oxide Sulphur dioxide Peroxyacetyl nitrate Carbon dioxide Nitric oxide Sulphur dioxide Peroxyacetyl nitrate Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper is refined by Oxidation Zone refining Roasting Electrolysis Oxidation Zone refining Roasting Electrolysis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a secondary pollutant ? PAN CO SO2 NO PAN CO SO2 NO ANSWER DOWNLOAD EXAMIANS APP
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