Chemistry The two metal ions that cause hardness to water are: Calcium, Magnesium Sodium, Calcium Sodium, Magnesium Sodium, Potassium Calcium, Magnesium Sodium, Calcium Sodium, Magnesium Sodium, Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atomic number is the number equal to Neutrons Protons Electrons None of these Neutrons Protons Electrons None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hard water and soft water can be distinguished by using Detergent Ordinary soap Dilute acid Liquid soap Detergent Ordinary soap Dilute acid Liquid soap ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electric fuse is an alloy of Carbon and tin Copper and iron Tin and lead Zinc and lead Carbon and tin Copper and iron Tin and lead Zinc and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The percentage of Nitrogen in Air is 78.03 85.02 0.03 0.94 78.03 85.02 0.03 0.94 ANSWER DOWNLOAD EXAMIANS APP
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