Chemistry The third shell of an atom can have a maximum of ______ electrons 15 18 21 13 15 18 21 13 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionic radii of N3-, O2-, F- and Na+ follows the order O2- > F- > Na+ > N3- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- Na+ > O2- > N3- > F- O2- > F- > Na+ > N3- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- Na+ > O2- > N3- > F- ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is an example of noble gas ? Helium Hydrogen Chlorine Nitrogen Helium Hydrogen Chlorine Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry ________ gives hardness to stainless steel. Zinc Tin Carbon Lead Zinc Tin Carbon Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of fire extinguisher is used for petroleum fire ? None of these Powder type Foam type Soda acid type None of these Powder type Foam type Soda acid type ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion of Ozone layer is mainly due to Volcanic eruptions Chlorofluorocarbons Aviation fuels Radioactive rays Volcanic eruptions Chlorofluorocarbons Aviation fuels Radioactive rays ANSWER DOWNLOAD EXAMIANS APP
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