Chemistry The most important ore of lead is Siderite Magnetite Pyrolusite Galena Siderite Magnetite Pyrolusite Galena ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following will replace hydrogen from acids to form salts ? Ag Na S P Ag Na S P ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bone ash contains Calcium sulphate Calcium phosphate Calcium hypophosphate Phosphoric sulphate Calcium sulphate Calcium phosphate Calcium hypophosphate Phosphoric sulphate ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called : Vulcanization Galvanization Alloy formation Zinc plating Vulcanization Galvanization Alloy formation Zinc plating ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitric acid does not react with Iron Gold Copper Zinc Iron Gold Copper Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry Food cans are coated with tin and not with zinc because Zinc has a higher melting point than tin Zinc is more reactive than tin Zinc is costlier than tin Zinc is less reactive than tin Zinc has a higher melting point than tin Zinc is more reactive than tin Zinc is costlier than tin Zinc is less reactive than tin ANSWER DOWNLOAD EXAMIANS APP