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Industrial Chemistry 1a - Test 5


1. Ozone is:

    A. a fast oxidizing agent
    B. a powerful oxidizing agent
    C. a straight molecule
    D. a stable allotrope


2. Sulfur dioxide is converted to sulfur trioxide when mixed with air, and passed over heated:

    A. magnesium dioxide
    B. manganese dioxide
    C. hydrochloric acid
    D. copper


3. The best way of extinguishing an alkali metal fire is to:

    A. use a carbon tetrachloride extinguisher
    B. smother it with a blanket
    C. use water
    D. smother it with sand


4. A chemical property common to oxygen and chlorine is that both:

    A. are colorless
    B. reduce metals
    C. have the same oxidation number
    D. support combustion of hydrogen


5. The form of carbon used for refractory linings is:

    A. charcoal
    B. carbon black
    C. coke
    D. graphite


6. Which sulfur compound is used as a bleaching agent?

    A. hydrogen sulfide
    B. sulfuric acid
    C. sulfur dioxide
    D. sulfur trioxide


7. The main source of sulfur oxides in the air is:

    A. automobile exhaust
    B. exhaust from coal burning
    C. exhaust from smelting ores
    D. exhausts from sulfuric acid manufacturing


8. Hard water can be caused by the presence of:

    A. nitrate ions
    B. sodium ions
    C. magnesium ions
    D. potassium ions


9. Galvanized iron does not rust because it is protected by a layer of:

    A. zinc
    B. tin
    C. copper
    D. aluminum


10. Nearly half of all sulfuric acid produced in the USA is used in:

    A. phosphate fertilizers
    B. high octane gasoline
    C. car batteries
    D. iron and steel












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