Chemistry Which of the following is not a method of preparing oxygen? Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water Fractional distillation of liquid air Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water Fractional distillation of liquid air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Many people died in London in 1952 as result of air pollution producing Mist Sleet Smog Fog Mist Sleet Smog Fog ANSWER DOWNLOAD EXAMIANS APP
Chemistry The structure of NaCl crystal is Body centered cubic Square planar Octahedral Face centered cubic Body centered cubic Square planar Octahedral Face centered cubic ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main active constituent of tea and coffee is aspirin chlorophyll caffeine nicotine aspirin chlorophyll caffeine nicotine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas produced in marshy places due to decomposition of vegetation is Methane Sulphur dioxide Carbon dioxide Carbon monoxide Methane Sulphur dioxide Carbon dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following metals provides amphoteric oxide ? Aluminium Sodium Silver Calcium Aluminium Sodium Silver Calcium ANSWER DOWNLOAD EXAMIANS APP
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