Chemistry The first metal used by man was gold bronze copper iron gold bronze copper iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used in the manufacture of vanaspati from vegetable oil is hydrogen carbon dioxide oxygen nitrogen hydrogen carbon dioxide oxygen nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Silicon Magnesium Iron Oxygen Silicon Magnesium Iron Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The manufacture of iron from iron ore involves the process of Reduction Fractional distillation Electrolysis Oxidation Reduction Fractional distillation Electrolysis Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the most reactive halogen Fluorine Bromine Chlorine Iodine Fluorine Bromine Chlorine Iodine ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the product formed when sodium bicarbonate is heated strongly? Sodium Hydroxide Sodium Carbonate Sodium Monoxide Sodium Peroxide Sodium Hydroxide Sodium Carbonate Sodium Monoxide Sodium Peroxide ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS