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 In which of the following states maximum iron ore is found ? Fe2O3 Fe3O4 FeS2 FeCO3 Fe2O3 Fe3O4 FeS2 FeCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Where does the oxygen that keeps us alive come from? Oxides of minerals Carbonates absorbed from soil Water Carbon dioxide Oxides of minerals Carbonates absorbed from soil Water Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most reactive among the halogens is Iodine Bromine Chlorine Fluorine Iodine Bromine Chlorine Fluorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main pollutants released from iron and steel industry are CO, CO2 and SO2 CO2, H2S and NO2 CO2, NO2 and SO3 NO, SO3 and H2S CO, CO2 and SO2 CO2, H2S and NO2 CO2, NO2 and SO3 NO, SO3 and H2S ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of neutrons present in an element having mass number 226 and atomic number 88 is : 88 50 314 138 88 50 314 138 ANSWER DOWNLOAD EXAMIANS APP
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