Chemistry Which of the following pollutants is main product of automobile exhaust ? CO2 Hydrocarbons NO CO CO2 Hydrocarbons NO CO ANSWER DOWNLOAD EXAMIANS APP
Chemistry Combustion of a candle is a/an Physical change Endothermic reaction Exothermic reaction Photochemical reaction Physical change Endothermic reaction Exothermic reaction Photochemical reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Spontaneous change is one in there is: An increase in Internal energy A lowering of entropy Increase in free energy A lowering of free energy An increase in Internal energy A lowering of entropy Increase in free energy A lowering of free energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry When water itself combines chemically with some element or mineral it is called Oxidation Carbonation Hydration Desilication Oxidation Carbonation Hydration Desilication ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element with highest first ionisation energy is Hydrogen Lithium Helium Sodium Hydrogen Lithium Helium Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following has pH value 7? Pure Water H2SO4 Sodium Carbonate HCl Pure Water H2SO4 Sodium Carbonate HCl ANSWER DOWNLOAD EXAMIANS APP
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