Chemistry Which one is the lightest element in the periodic table Oxygen Carbon Helium Hydrogen Oxygen Carbon Helium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silicon is a Semiconductor Conductor Insulator Nonconductor Semiconductor Conductor Insulator Nonconductor ANSWER DOWNLOAD EXAMIANS APP
Chemistry Number of neutrons in an atom of hydrogen is Two Three Zero One Two Three Zero One ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals is not a pollutant ? Lead Arsenic Aluminium Mercury Lead Arsenic Aluminium Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry The percentage of Nitrogen in Air is 85.02 78.03 0.94 0.03 85.02 78.03 0.94 0.03 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a natural source of hydrocarbon? Mica Coal Natural Gas Petroleum Mica Coal Natural Gas Petroleum ANSWER DOWNLOAD EXAMIANS APP
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