Chemistry Magnetite is FeCO3 Fe3O4 2Fe2O3. 3H2O Fe2O3 FeCO3 Fe3O4 2Fe2O3. 3H2O Fe2O3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metallic constituents of hard water are : Magnesium, calcium and tin Iron, tin and calcium Calcium, magnesium and iron Magnesium, tin and iron Magnesium, calcium and tin Iron, tin and calcium Calcium, magnesium and iron Magnesium, tin and iron 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 36 19 53 17 36 19 53 17 ANSWER DOWNLOAD EXAMIANS APP
Chemistry 1 carat of diamond is equal to 200 mg 100 g 100 mg 200 g 200 mg 100 g 100 mg 200 g ANSWER DOWNLOAD EXAMIANS APP
Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/4 1/8 1/3 1/6 1/4 1/8 1/3 1/6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nuclear particles which are assumed to hold the nucleons together are mesons positrons neutrons electrons mesons positrons neutrons electrons ANSWER DOWNLOAD EXAMIANS APP
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