Chemistry Which of the following is an iron ore ? Lignite Magnetite Nitrite Bauxite Lignite Magnetite Nitrite Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conduction band electrons have more mobility than holes because they Experience collision less frequently Have negative charge Need less energy to move them Are lighter Experience collision less frequently Have negative charge Need less energy to move them Are lighter ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used for filling weather balloons is Hydrogen Air Nitrogen Helium Hydrogen Air Nitrogen Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a commercial source of energy? Coal Petroleum Natural Gas Firewood Coal Petroleum Natural Gas Firewood ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following minerals is found in Monazite sand ? Sodium Potassium Uranium Thorium Sodium Potassium Uranium Thorium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical formula of the laughing gas is NO2 N2O3 NO N2O NO2 N2O3 NO N2O ANSWER DOWNLOAD EXAMIANS APP
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