Chemistry Which metal is extracted from sea water? Potassium Beryllium Aluminium Magnesium Potassium Beryllium Aluminium Magnesium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamond is lustrous because It is pure It is hard Its refractive index is high It is colourless It is pure It is hard Its refractive index is high It is colourless ANSWER DOWNLOAD EXAMIANS APP
Chemistry When iron rusts, its weight Decreases Remains the same Increases First increases and then decreases Decreases Remains the same Increases First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry The heat energy produced when the human body metabolises 1 gram of fat is 39 KJ 29 KJ 1 KJ 30 KJ 39 KJ 29 KJ 1 KJ 30 KJ ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by Subjecting oxygen to high pressure The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen The combination of oxygen molecules Subjecting oxygen to high pressure The action of nitrogen on oxygen in atmosphere The action of ultraviolet rays on oxygen The combination of oxygen molecules ANSWER DOWNLOAD EXAMIANS APP
Chemistry The third shell of an atom can have a maximum of ______ electrons 13 15 21 18 13 15 21 18 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS