Chemistry In upper layer of atmosphere ozone is formed by The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure The combination of oxygen molecules The action of ultraviolet rays on oxygen The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure The combination of oxygen molecules The action of ultraviolet rays on oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is used for converting vegetable oils into saturated fats ? O2 SO2 Cl2 H2 O2 SO2 Cl2 H2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms of different elements have Different atomic number and same eletronic configu-ration Different atomic number and different number of valence electrons Same number of electrons and neutrons Same atomic number and same electronic configuration Different atomic number and same eletronic configu-ration Different atomic number and different number of valence electrons Same number of electrons and neutrons Same atomic number and same electronic configuration ANSWER DOWNLOAD EXAMIANS APP
Chemistry Combustion of a candle is a/an Photochemical reaction Physical change Exothermic reaction Endothermic reaction Photochemical reaction Physical change Exothermic reaction Endothermic reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Magnetite is Fe2O3 FeCO3 2Fe2O3. 3H2O Fe3O4 Fe2O3 FeCO3 2Fe2O3. 3H2O Fe3O4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in solar cells contains Tin Silicon Caesium Thallium Tin Silicon Caesium Thallium ANSWER DOWNLOAD EXAMIANS APP
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