Chemistry The first metal used by man was gold iron bronze copper gold iron bronze copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper is refined by Oxidation Zone refining Electrolysis Roasting Oxidation Zone refining Electrolysis Roasting ANSWER DOWNLOAD EXAMIANS APP
Chemistry Colloids can be purified by Condensation Dialysis Condensation Condensation Condensation Dialysis Condensation Condensation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is most electronegative Tin Silicon Lead Carbon Tin Silicon Lead Carbon 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 12 18 Zero 6 12 18 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mixture can be Pure substance Heterogeneous Homogeneous Both A and B Pure substance Heterogeneous Homogeneous Both A and B ANSWER DOWNLOAD EXAMIANS APP
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