Chemistry The first metal used by man was copper iron gold bronze copper iron gold bronze ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Lead Copper Cadmium Chromium Lead Copper Cadmium Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stalactites and Stalagmites form due to the precipitation of : CaCl2 MgCl2 CaCO3 MgCO3 CaCl2 MgCl2 CaCO3 MgCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Liquid Nitrogen boils at 82 Kelvin 54 kelvin 77 kelvin 97 Kelvin 82 Kelvin 54 kelvin 77 kelvin 97 Kelvin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver gets corroded due to ________ in air. Carbon dioxide Nitrogen Hydrogen Sulphide Oxygen Carbon dioxide Nitrogen Hydrogen Sulphide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a secondary pollutant ? PAN SO2 NO CO PAN SO2 NO CO ANSWER DOWNLOAD EXAMIANS APP
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