Chemistry The gas used for filling weather balloons is Air Hydrogen Helium Nitrogen Air Hydrogen Helium Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The water pollution in river is measured by the dissolved amount of Ozone Nitrogen Oxygen Chlorine Ozone Nitrogen Oxygen Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Benzene cannot undergo : Addition Elimination Oxidation Substitution Addition Elimination Oxidation Substitution ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ethylene is a ________ molecule. Polar Ionic Covalent Nonpolar Polar Ionic Covalent Nonpolar ANSWER DOWNLOAD EXAMIANS APP
Chemistry Solder is an alloy of Sodium, lead Lead, zinc Copper, lead Tin, lead Sodium, lead Lead, zinc Copper, lead Tin, lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The “King of Metals” is : Silver Aluminium Iron Gold Silver Aluminium Iron Gold ANSWER DOWNLOAD EXAMIANS APP
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