Chemistry The method that cannot be used for removing permanent hardness of water is adding caustic soda adding sodium carbonate boiling distillation adding caustic soda adding sodium carbonate boiling distillation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymer obtained by the condensation of hexamethylene diamine and adipic acid is : Tollen's Nylon 66 Terylene Bakelite Tollen's Nylon 66 Terylene Bakelite ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main buffer system of the human blood is NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - HCO3 H2CO3 - CO32- NH2CONH2 - NH2CONH+ CH3COOH - CH3COO- H2CO3 - HCO3 H2CO3 - CO32- ANSWER DOWNLOAD EXAMIANS APP
Chemistry A balloon filled with helium rises in air because The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide bleaches colouring matter by : Reduction Oxidation Decomposition Dehydration Reduction Oxidation Decomposition Dehydration ANSWER DOWNLOAD EXAMIANS APP
Chemistry Lead pencil contains Lead sulphide Graphite Ferrous sulphide Lead Lead sulphide Graphite Ferrous sulphide Lead ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS