Chemistry What are the number of moles of CO2 which contains 16 g of oxygen? 0.4 mole 0.2 mole 0.25 mole 0.5 mole 0.4 mole 0.2 mole 0.25 mole 0.5 mole ANSWER DOWNLOAD EXAMIANS APP
Chemistry Oxygen has (+) oxidation number only in N2O OF2 C12O H2O (2) N2O OF2 C12O H2O (2) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rutherford’s scattering experiment proved the presence of Electrons in atoms Nucleus in atoms Neutrons in atoms Atoms in all matter Electrons in atoms Nucleus in atoms Neutrons in atoms Atoms in all matter ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant metal in the Earth’s crust is Copper Zinc Iron Aluminium Copper Zinc Iron Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The lowest layer of earth's atmosphere is Mesosphere Stratosphere Troposphere Ionosphere Mesosphere Stratosphere Troposphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 6 18 Zero 12 6 18 Zero 12 ANSWER DOWNLOAD EXAMIANS APP
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