Chemistry Which of the following is not a method of preparing oxygen? Electrolysis of water Decomposition of manganese dioxide Decomposition of potassium permanganate Fractional distillation of liquid air Electrolysis of water Decomposition of manganese dioxide Decomposition of potassium permanganate Fractional distillation of liquid air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Biofertilizers convert nitrogen to ________ . Nitrates Nitrogenase Ammonia Amino acids Nitrates Nitrogenase Ammonia Amino acids ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main buffer system of the human blood is H2CO3 - HCO3 H2CO3 - CO32- CH3COOH - CH3COO- NH2CONH2 - NH2CONH+ H2CO3 - HCO3 H2CO3 - CO32- CH3COOH - CH3COO- NH2CONH2 - NH2CONH+ ANSWER DOWNLOAD EXAMIANS APP
Chemistry Type metal used in printing press is an alloy of Lead and zinc Lead and copper Lead and antimony Lead and bismuth Lead and zinc Lead and copper Lead and antimony Lead and bismuth ANSWER DOWNLOAD EXAMIANS APP
Chemistry Petroleum consists of a mixture of Hydrocarbons Carbohydrates Carbonates Carbides Hydrocarbons Carbohydrates Carbonates Carbides ANSWER DOWNLOAD EXAMIANS APP
Chemistry Antacid tablets consist of Hydroxides of magnesium and sodium Hydroxides of magnesium and aluminium Hydroxides of sodium, magnesium and aluminium Hydroxides of sodium and aluminium Hydroxides of magnesium and sodium Hydroxides of magnesium and aluminium Hydroxides of sodium, magnesium and aluminium Hydroxides of sodium and aluminium ANSWER DOWNLOAD EXAMIANS APP
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