Chemistry The major constituent of air is oxygen hydrogen carbon dioxide nitrogen oxygen hydrogen carbon dioxide nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The temperature of oxy-acetylene flame is around 3200°C 2800°C 3600°C 4000°C 3200°C 2800°C 3600°C 4000°C ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heavy metals got their name because compared to other atoms they have Higher atomic numbers Higher densities Higher atomic masses Higher atomic radii Higher atomic numbers Higher densities Higher atomic masses Higher atomic radii ANSWER DOWNLOAD EXAMIANS APP
Chemistry The substance that is added to make natural rubber strong and more bouncy is Polythene Sponge Sulphur Chlorine Polythene Sponge Sulphur Chlorine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical properties of isotopes Must be different Need not be same Must be same Need not be different Must be different Need not be same Must be same Need not be different ANSWER DOWNLOAD EXAMIANS APP
Chemistry The tip of the match-stick contains Phosphorus trichloride Red phosphorus White phosphorus Phosphorus pentoxide Phosphorus trichloride Red phosphorus White phosphorus Phosphorus pentoxide ANSWER DOWNLOAD EXAMIANS APP