Chemistry The metallic constituents of hard water are : Magnesium, tin and iron Magnesium, calcium and tin Calcium, magnesium and iron Iron, tin and calcium Magnesium, tin and iron Magnesium, calcium and tin Calcium, magnesium and iron Iron, tin and calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Tear gas is : Bleaching powder Carbonyl chloride Chloroprene Nitrous oxide Bleaching powder Carbonyl chloride Chloroprene Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Normal rainwater has a pH level of 6.3 5.6 8.3 3.2 6.3 5.6 8.3 3.2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The coating of a thin layer of zinc on steel or iron objects is known as Electroplating Tinning Galvanising Hot dipping Electroplating Tinning Galvanising Hot dipping ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the most common salt in sea water ? Calcium carbonate Sodium chloride Magnesium sulphate Potassium chloride Calcium carbonate Sodium chloride Magnesium sulphate Potassium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first organic compound synthesised in the laboratory was Urea Lactic acid Glucose Uric acid Urea Lactic acid Glucose Uric acid ANSWER DOWNLOAD EXAMIANS APP
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