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Post Utme Chemistry Past QuestionsQuestion 851:The most suitable metal that can be used as a lightening conductor is ____________ A. Silver B. Copper C. Iron D. Aluminum Question 852:The most abundant element on the earth's crust is ____________ A. Nitrogen B. Hydrogen C. Oxygen D. Fluorine Question 853:Metalloids are also referred to as ____________ A. Semi-metals B. Metals C. Colloids D. Non-metals Question 854:The ores that can be concentrated by floatation are ____________ A. Nitride ores B. Sulphide ores C. Oxide ores D. Chloride ores Question 855:Rhombic sulphur, monoclinic sulphur and amorphous sulphur are ____________ A. Isomels B. Isotopes C. Allotropes D. Monomers E. Polymorphs |
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