Chemistry Which among the following is found in chlorophyll ? Ca2+ A l3+ Mg2+ Fe2+ Ca2+ A l3+ Mg2+ Fe2+ ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who first published the periodic table John Dalton Dmitri Mendeleev Julius Lothar Meyer Henry Moseley John Dalton Dmitri Mendeleev Julius Lothar Meyer Henry Moseley ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one element has the highest electronegativity value Fluorine Lithium Chlorine Nitrogen Fluorine Lithium Chlorine Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry What are the number of moles of CO2 which contains 16 g of oxygen? 0.5 mole 0.2 mole 0.25 mole 0.4 mole 0.5 mole 0.2 mole 0.25 mole 0.4 mole ANSWER DOWNLOAD EXAMIANS APP
Chemistry 24 carat of diamond is equal to 95% mg 200 g 91% gold 200 mg 95% mg 200 g 91% gold 200 mg ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the most commonly used substance in fluorescent tubes? Mercury oxide and neon Sodium oxide and argon Sodium vapour and neon Mercury vapour and argon Mercury oxide and neon Sodium oxide and argon Sodium vapour and neon Mercury vapour and argon ANSWER DOWNLOAD EXAMIANS APP
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