Chemistry Which of the following is not a method of preparing oxygen? Decomposition of manganese dioxide Electrolysis of water Decomposition of potassium permanganate Fractional distillation of liquid air Decomposition of manganese dioxide Electrolysis of water Decomposition of potassium permanganate Fractional distillation of liquid air 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
Chemistry The most malleable metal is iron gold silver platinum iron gold silver platinum ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the principal ore of aluminium ? Bauxite Dolomite Lignite Copper Bauxite Dolomite Lignite Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between 50 and 100 km 20 and 50 km 10 and 20 km 5 and 10 km 50 and 100 km 20 and 50 km 10 and 20 km 5 and 10 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry The aqueous solution of potassium chloride is A non-electrolyte A weak electrolyte Initially weak and then become a strong electrolyte A strong electrolyte A non-electrolyte A weak electrolyte Initially weak and then become a strong electrolyte A strong electrolyte ANSWER DOWNLOAD EXAMIANS APP
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