Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogen sulphide Hydrogenated wafers Aluminium phosphide Aluminium sulphide Hydrogen sulphide Hydrogenated wafers Aluminium phosphide Aluminium sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Magnesium Iron Oxygen Silicon Magnesium Iron Oxygen Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry High concentration hydrocarbon pollutants in atmospheric air causes Respiratory diseases (e.g.asthma) Reduced crop yield Silicosis Cancer Respiratory diseases (e.g.asthma) Reduced crop yield Silicosis Cancer ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following minerals is found in Monazite sand ? Sodium Uranium Potassium Thorium Sodium Uranium Potassium Thorium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water is Tap water Distilled water Rain water Ground water Tap water Distilled water Rain water Ground water ANSWER DOWNLOAD EXAMIANS APP
Chemistry The Bhopal tragedy was caused by the gas Carbon monoxide Chlorine Methyl isocyanate Phosgene Carbon monoxide Chlorine Methyl isocyanate Phosgene ANSWER DOWNLOAD EXAMIANS APP
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