Chemistry The element used in the manufacture of safety matches is Phosphorous Magnesium Sulphur Silicon Phosphorous Magnesium Sulphur Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pollutants is main product of automobile exhaust ? Hydrocarbons NO CO2 CO Hydrocarbons NO CO2 CO ANSWER DOWNLOAD EXAMIANS APP
Chemistry Magnetite is Fe3O4 FeCO3 Fe2O3 2Fe2O3. 3H2O Fe3O4 FeCO3 Fe2O3 2Fe2O3. 3H2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal extracted from Bauxite is : Copper Manganese Silver Aluminum Copper Manganese Silver Aluminum ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Smelting Refining Roasting Calcination Smelting Refining Roasting Calcination ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal used to recover copper from a solution of copper sulphate is Fe Hg Ag Na Fe Hg Ag Na ANSWER DOWNLOAD EXAMIANS APP
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