Chemistry Where does the oxygen that keeps us alive come from? Carbonates absorbed from soil Carbon dioxide Water Oxides of minerals Carbonates absorbed from soil Carbon dioxide Water Oxides of minerals ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which method will be employed to test the hardness of water? None of these Boiling Formation of lather with soap Distillation None of these Boiling Formation of lather with soap Distillation ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of oxygen in carbon dioxide (CO2) 0.509 0.658 0.305 0.727 0.509 0.658 0.305 0.727 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitrogen fixation is a process of Assimilation of nitrate Conversion of molecular nitrogen to ammonia Conversion of organic nitrogen to proteins Utilisation of nitrogen gas Assimilation of nitrate Conversion of molecular nitrogen to ammonia Conversion of organic nitrogen to proteins Utilisation of nitrogen gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following methods is used in determining the number average molar mass of a macromolecule Sedimentation equilibrium Light scattering Viscosity Osmotic pressure Sedimentation equilibrium Light scattering Viscosity Osmotic pressure ANSWER DOWNLOAD EXAMIANS APP
Chemistry The luster of a metal is due to presence of free electrons its high polishing its chemical inertness its high density presence of free electrons its high polishing its chemical inertness its high density ANSWER DOWNLOAD EXAMIANS APP
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