Chemistry Which one of the following forms of phosphorus is most reactive? Violet phosphorus Red phosphorus White phosphorus Black phosphorus Violet phosphorus Red phosphorus White phosphorus Black phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/8 1/3 1/4 1/6 1/8 1/3 1/4 1/6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to NO2 N2O SO2 SO3 NO2 N2O SO2 SO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamond is lustrous because Its refractive index is high It is pure It is colourless It is hard Its refractive index is high It is pure It is colourless It is hard ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the mass percentage of oxygen in carbon dioxide (CO2) 0.305 0.727 0.509 0.658 0.305 0.727 0.509 0.658 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Maximum permissible concentration of copper in drinking water in mg/L is 0.01 1 2 0.05 0.01 1 2 0.05 ANSWER DOWNLOAD EXAMIANS APP
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