Chemistry Which of the following gases is most toxic ? Carbon dioxide Sulphur dioxide Carbon monoxide Chlorine Carbon dioxide Sulphur dioxide Carbon monoxide Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultra purification of a metal is done by : Smelting Slugging Leaching Zone melting Smelting Slugging Leaching Zone melting ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Carbon dioxide Nitrogen Carbon monoxide Neon Carbon dioxide Nitrogen Carbon monoxide Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial nitric acid is coloured because it contains dissolved : Oxygen Coloured impurities Nitrous oxide Nitrogen dioxide Oxygen Coloured impurities Nitrous oxide Nitrogen dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is most acidic Na2O CaO MgO Al22O3 Na2O CaO MgO Al22O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is least likely to be found in commercial fertilisers? Nitrogen Phosphorous Potassium Silicon Nitrogen Phosphorous Potassium Silicon ANSWER DOWNLOAD EXAMIANS APP
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