Chemistry The metal that is usually extracted from sea water is K Na Mg Ca K Na Mg Ca ANSWER DOWNLOAD EXAMIANS APP
Chemistry Removal of carbon particles from air involves the principle of Precipitation Filteration Electrophoresis Sedimentation Precipitation Filteration Electrophoresis Sedimentation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver halides are used in photographic plates because they are Reduced by light Oxidised in air Soluble in hyposolution Totally colourless Reduced by light Oxidised in air Soluble in hyposolution Totally colourless ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant metal in the Earth’s crust is Aluminium Copper Iron Zinc Aluminium Copper Iron Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atmospheric gas that is mainly responsible for Green House effect : Oxygen Nitrogen Ozone Carbondioxide Oxygen Nitrogen Ozone Carbondioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Metal are good conductors, because The molecules in them are very close to each other They contain free electrons The molecules in them collide very freely They contain reflecting surface The molecules in them are very close to each other They contain free electrons The molecules in them collide very freely They contain reflecting surface ANSWER DOWNLOAD EXAMIANS APP
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