Chemistry The most abundant element by number in the living system is : Hydrogen Carbon Nitrogen Oxygen Hydrogen Carbon Nitrogen Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The two metal ions that cause hardness to water are: Sodium, Magnesium Sodium, Potassium Calcium, Magnesium Sodium, Calcium Sodium, Magnesium Sodium, Potassium Calcium, Magnesium Sodium, Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The wire of flash bulb is made of: Silver Magnesium Copper Barium Silver Magnesium Copper Barium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Laughing gas is Nitrogen pentoxide Nitrous oxide Nitrogen trioxide Nitric oxide Nitrogen pentoxide Nitrous oxide Nitrogen trioxide Nitric oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry 'Fire-fighting clothes' are made from Steatite Talc Mica Asbestos Steatite Talc Mica Asbestos ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionic radii of N3-, O2-, F- and Na+ follows the order Na+ > O2- > N3- > F- N3- > Na+ > O2- > F- N3- > O2- > F- > Na+ O2- > F- > Na+ > N3- Na+ > O2- > N3- > F- N3- > Na+ > O2- > F- N3- > O2- > F- > Na+ O2- > F- > Na+ > N3- ANSWER DOWNLOAD EXAMIANS APP
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