Chemistry Helium gas is used in gas balloons instead of hydrogen gas because it is More abundant than hydrogen Lighter than hydrogen Non-combustible More stable More abundant than hydrogen Lighter than hydrogen Non-combustible More stable ANSWER DOWNLOAD EXAMIANS APP
Chemistry When cathode rays strike a target of high atomic weight, they give rise to ?-rays ? and ? rays Positive rays X-rays ?-rays ? and ? rays Positive rays X-rays ANSWER DOWNLOAD EXAMIANS APP
Chemistry The fundamental particles present in the nucleus of an atom are Electron, proton Proton, neutron Neutron, electron Neutron, positron Electron, proton Proton, neutron Neutron, electron Neutron, positron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is heaviest naturally-occurring element of the periodic element Uranium Rhodium Iron Thorium Uranium Rhodium Iron Thorium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the stratosphere is mainly caused by Chlorogluorocarbons SO2 NO NO2 Chlorogluorocarbons SO2 NO NO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of oxygen in carbon dioxide (CO2) 0.509 0.658 0.727 0.305 0.509 0.658 0.727 0.305 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS