Chemistry The maximum number of covalent formed by nitrogen is 4 1 3 2 4 1 3 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas produced in marshy places due to decomposition of vegetation is Methane Carbon monoxide Carbon dioxide Sulphur dioxide Methane Carbon monoxide Carbon dioxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Sodium carbonate Alum Potassium Permangante Lime Sodium carbonate Alum Potassium Permangante Lime ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of oxygen in carbon dioxide (CO2) 0.509 0.727 0.305 0.658 0.509 0.727 0.305 0.658 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper is refined by Oxidation Roasting Zone refining Electrolysis Oxidation Roasting Zone refining Electrolysis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Natural rubber is the polymer of : Ethylene Styrene Isoprene Butadiene Ethylene Styrene Isoprene Butadiene ANSWER DOWNLOAD EXAMIANS APP
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