Chemistry Which one of the following elements exhibits the greatest tendency to lose electrons ? Zinc Fluorine Oxygen Lithium Zinc Fluorine Oxygen Lithium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is 5x/36 5x x/6 7.2 x 5x/36 5x x/6 7.2 x ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs? Nitrogen Methane Helium Hydrogen Nitrogen Methane Helium Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry In which of the following states maximum iron ore is found ? FeS2 FeCO3 Fe3O4 Fe2O3 FeS2 FeCO3 Fe3O4 Fe2O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is used in the manufacture of safety matches? Phosphorus Silicon Graphite Sodium Phosphorus Silicon Graphite Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of hydrogen bonds between guanine and cytosine in DNA is 2 3 4 1 2 3 4 1 ANSWER DOWNLOAD EXAMIANS APP
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