Chemistry The most important ore of lead is Siderite Galena Pyrolusite Magnetite Siderite Galena Pyrolusite Magnetite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical formula of the laughing gas is NO2 N2O NO N2O3 NO2 N2O NO N2O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compounds formed when hydrogen combines with p-block elements are called Metallic hydrides Molecular hydrides Polynuclear hydrides Ionic hydrides Metallic hydrides Molecular hydrides Polynuclear hydrides Ionic hydrides ANSWER DOWNLOAD EXAMIANS APP
Chemistry Quartz is a crystalline form of Limestone Silica Glass Alumina Limestone Silica Glass Alumina ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial Vaseline is derived from Plant gums Coal tar Wool wax Petroleum Plant gums Coal tar Wool wax Petroleum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Carbon monoxide Carbon dioxide Neon Nitrogen Carbon monoxide Carbon dioxide Neon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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