Chemistry Which of the following is colourless ? Oxygen Chlorine Phosphorus Sulphur Oxygen Chlorine Phosphorus Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heavy metals got their name because compared to other atoms they have Higher densities Higher atomic numbers Higher atomic radii Higher atomic masses Higher densities Higher atomic numbers Higher atomic radii Higher atomic masses ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas emitted by power stations causes acid rain? Sulphur dioxide Nitrogen Carbon dioxide Helium Sulphur dioxide Nitrogen Carbon dioxide Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following gases is most toxic ? Carbon monoxide Carbon dioxide Sulphur dioxide Chlorine Carbon monoxide Carbon dioxide Sulphur dioxide Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is very reactive and kept in kerosene? Iodine Potassium Bromine Sodium Iodine Potassium Bromine Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of Ozone layer is mainly due to Volcanic eruptions Radioactive rays Aviation fuels Chlorofluorocarbons Volcanic eruptions Radioactive rays Aviation fuels Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS