Chemistry Commercial nitric acid is coloured because it contains dissolved : Nitrogen dioxide Oxygen Nitrous oxide Coloured impurities Nitrogen dioxide Oxygen Nitrous oxide Coloured impurities ANSWER DOWNLOAD EXAMIANS APP
Chemistry The substance most commonly used as a food preservative is Sodium salt of benzoic acid Acetic acid Tartaric acid Sodium carbonate Sodium salt of benzoic acid Acetic acid Tartaric acid Sodium carbonate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Frequent use Oxidation of cellulose Collection of dust Lack of aeration Frequent use Oxidation of cellulose Collection of dust Lack of aeration ANSWER DOWNLOAD EXAMIANS APP
Chemistry How many neutrons are there in 92U238 atom ? 238 330 146 92 238 330 146 92 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aluminium can be purified by Oxidation Ozonolysis Electrolysis Distillation Oxidation Ozonolysis Electrolysis Distillation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals does not react with water to produce Hydrogen ? Sodium Potassium Lithium Cadmium Sodium Potassium Lithium Cadmium ANSWER DOWNLOAD EXAMIANS APP
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