Chemistry Which of the following is not a method of preparing oxygen? Electrolysis of water Decomposition of potassium permanganate Fractional distillation of liquid air Decomposition of manganese dioxide Electrolysis of water Decomposition of potassium permanganate Fractional distillation of liquid air Decomposition of manganese dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The major harmful gas emitted by automobile vehicle which causes air pollution is Ozone gas Methane Carbon dioxide Carbon Monoxide Ozone gas Methane Carbon dioxide Carbon Monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry A substance which readily forms colloidal solution in contact with water is called Associated colloid Hydrophilic colloid Hydrophobic colloid Extrinsic colloid Associated colloid Hydrophilic colloid Hydrophobic colloid Extrinsic colloid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Magnetite is Fe2O3 Fe3O4 2Fe2O3. 3H2O FeCO3 Fe2O3 Fe3O4 2Fe2O3. 3H2O FeCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who developed Hydrogen Bomb? J. Robert Oppen Heimer Wernher Von Braun Edward Teller Samuel Cohen J. Robert Oppen Heimer Wernher Von Braun Edward Teller Samuel Cohen ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the chemical symbol of mercury None of these Mg Hg Mr None of these Mg Hg Mr ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS