Chemistry Where does the oxygen that keeps us alive come from? Carbonates absorbed from soil Water Oxides of minerals Carbon dioxide Carbonates absorbed from soil Water Oxides of minerals Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of ‘Common salt’ is Calcium chloride Ammonium chloride Sodium chloride Sodium nitrate Calcium chloride Ammonium chloride Sodium chloride Sodium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of copper in drinking water in mg/L is 0.05 0.01 2 1 0.05 0.01 2 1 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound to which H2 does not add is Tetraphenyl ethylene Biphenyl ethylene Tetra –9 – phenanthrylethylene Tetra – a –naphthylethylene Tetraphenyl ethylene Biphenyl ethylene Tetra –9 – phenanthrylethylene Tetra – a –naphthylethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercially, sodium bicarbonate is known as Baking soda Washing soda Soda ash Bleaching powder Baking soda Washing soda Soda ash Bleaching powder ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Carbon monoxide Water vapour Carbon dioxide Ozone Carbon monoxide Water vapour Carbon dioxide Ozone ANSWER DOWNLOAD EXAMIANS APP
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