Chemistry Brass is made of Copper and zinc Copper and tin Tin and lead Copper, tin and zinc Copper and zinc Copper and tin Tin and lead Copper, tin and zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry ‘Aerosol’ is known as Microbes, present in air Green house gas present in air Pollutant gas, present in air Suspended solid particles in air Microbes, present in air Green house gas present in air Pollutant gas, present in air Suspended solid particles in air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the atmosphere is mainly caused by Nitrogen dioxide Chlorofluorocarbon Hydrogen sulphide Sulphur dioxide Nitrogen dioxide Chlorofluorocarbon Hydrogen sulphide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of 'Plaster of Paris' commonly used for setting broken bones is Calcium sulphate Calcium chloride Calcium nitrate Calcium carbonate Calcium sulphate Calcium chloride Calcium nitrate Calcium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper is refined by Zone refining Roasting Electrolysis Oxidation Zone refining Roasting Electrolysis Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The natural resource, known as black gold is Platinum Coal Tin Lead Platinum Coal Tin Lead ANSWER DOWNLOAD EXAMIANS APP
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