Chemistry Which of the following is not a method of preparing oxygen? Electrolysis of water Decomposition of potassium permanganate Decomposition of manganese dioxide Fractional distillation of liquid air Electrolysis of water Decomposition of potassium permanganate Decomposition of manganese dioxide Fractional distillation of liquid air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stainless steel is usually made by alloying the steel with Manganese and copper Chromium and nickel Copper and chromium Copper and nickel Manganese and copper Chromium and nickel Copper and chromium Copper and nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of d-electrons in Fe2+ (Z = 26) is not equal to that of d-electrons in Fe(Z = 26) s-electrons in Mg(Z = 12) p-electrons in Ne(Z = 10) p-electrons in CI(Z = 17) d-electrons in Fe(Z = 26) s-electrons in Mg(Z = 12) p-electrons in Ne(Z = 10) p-electrons in CI(Z = 17) ANSWER DOWNLOAD EXAMIANS APP
Chemistry This group of alumino-silicate minerals is widely used in making electrical insulators Bauxite Mica Chromite Manganese Bauxite Mica Chromite Manganese ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nylon is made up of : Polypropylene Polyester Polyethylene Polyamide Polypropylene Polyester Polyethylene Polyamide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Sewage Insecticides Tobacco Leaded gasoline Sewage Insecticides Tobacco Leaded gasoline ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS