Chemistry Where does the oxygen that keeps us alive come from? Water Oxides of minerals Carbonates absorbed from soil Carbon dioxide Water Oxides of minerals Carbonates absorbed from soil Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound to which H2 does not add is Tetra –9 – phenanthrylethylene Tetraphenyl ethylene Tetra – a –naphthylethylene Biphenyl ethylene Tetra –9 – phenanthrylethylene Tetraphenyl ethylene Tetra – a –naphthylethylene Biphenyl ethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following acids serves as an electrolyte in a lead storage battery? Nitric acid Hydrochloric acid Sulphuric acid Lactic acid Nitric acid Hydrochloric acid Sulphuric acid Lactic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of 'laughing gas' is Nitrous oxide Nitric oxide Nitrogen pentoxide Nitrogen dioxide Nitrous oxide Nitric oxide Nitrogen pentoxide Nitrogen dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of these acids is not organic in origin? Oxalic acid Citric acid Sulphuric acid Lactic acid Oxalic acid Citric acid Sulphuric acid Lactic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the stratosphere is mainly caused by NO SO2 Chlorogluorocarbons NO2 NO SO2 Chlorogluorocarbons NO2 ANSWER DOWNLOAD EXAMIANS APP
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