Chemistry The first metal used by a man was Copper Silver Brass Bronze Copper Silver Brass Bronze ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Calcium Oxygen Nitrogen Silicon Calcium Oxygen Nitrogen Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms having the same number of protons but different number of neutrons are called : Anions Cations Isotopes Higgs-boson Anions Cations Isotopes Higgs-boson ANSWER DOWNLOAD EXAMIANS APP
Chemistry Zinc sulphide is commonly used as Herbicide Rodenticide Fungicide Deodorant Herbicide Rodenticide Fungicide Deodorant ANSWER DOWNLOAD EXAMIANS APP
Chemistry Formic acid is produced by Red ants Cockroaches Mosquitoes White ants Red ants Cockroaches Mosquitoes White ants ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silicone is a polymer of Silane Dialkyl dichloro silane Tetraalkyl silane Silicon tetrachloride Silane Dialkyl dichloro silane Tetraalkyl silane Silicon tetrachloride ANSWER DOWNLOAD EXAMIANS APP
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