Chemistry The ionic radii of N3-, O2-, F- and Na+ follows the order Na+ > O2- > N3- > F- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- Na+ > O2- > N3- > F- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs? Methane Helium Hydrogen Nitrogen Methane Helium Hydrogen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 17 36 53 19 17 36 53 19 ANSWER DOWNLOAD EXAMIANS APP
Chemistry A polymeric substance used to make parachute is Cotton Terylene Viscose Rayon Cotton Terylene Viscose Rayon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of Ozone layer is mainly due to Volcanic eruptions Chlorofluorocarbons Radioactive rays Aviation fuels Volcanic eruptions Chlorofluorocarbons Radioactive rays Aviation fuels ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is pure matter ? Brass Carbon–dioxide Iron Air Brass Carbon–dioxide Iron Air ANSWER DOWNLOAD EXAMIANS APP
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