Chemistry The third shell of an atom can have a maximum of ______ electrons 15 18 21 13 15 18 21 13 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heavy metals got their name because compared to other atoms they have Higher atomic radii Higher atomic numbers Higher densities Higher atomic masses Higher atomic radii Higher atomic numbers Higher densities Higher atomic masses ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a precious/semi-precious stone? Ruby Emerald Sapphire Pearl Ruby Emerald Sapphire Pearl ANSWER DOWNLOAD EXAMIANS APP
Chemistry The term 'brown air' is used for Sulphurous smog Industrial smog Acid fumes Photochemical smog Sulphurous smog Industrial smog Acid fumes Photochemical smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by a man was Bronze Brass Silver Copper Bronze Brass Silver Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry The charcoal used to decolourise brown sugar solution is Coconut charcoal Animal charcoal Wood charcoal Sugar charcoal Coconut charcoal Animal charcoal Wood charcoal Sugar charcoal ANSWER DOWNLOAD EXAMIANS APP
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