Welcome to the Quiz!
This quiz contains 7 questions from a mix of 1 subtopics.
Which of the following is a key feature of chlorofluorocarbons (CFCs)?
they are highly reactive
they are flammable
they contain no C-H bonds
they contain only carbon and chlorine
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What is the primary role of the ozone layer in the upper atmosphere?
to reflect visible light
to absorb harmful ultraviolet radiation
to prevent air pollution
to trap greenhouse gases
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What happens to CFC molecules when they reach the stratosphere?
they are converted into greenhouse gases
they are broken down by UV radiation, releasing chlorine radicals
they are carried back to the ground level
they react with ozone to form new compounds
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Which of the following reactions describes the breakdown of CFCs in the upper atmosphere by high-energy UV radiation?
CF3Cl ➔ CF3 + Cl
CF3Cl ➔ CF3• + Cl•
CF3Cl ➔ CF3 + Cl•
CF3Cl ➔ CF3• + Cl
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What is the overall effect of the reactions between chlorine radicals and ozone?
O3 + Cl• ➔ ClO• + O2
O3 + ClO• ➔ Cl• + 2O2
O3 + O ➔ 2O2
O3 + O2 ➔ 2O2 + O
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Which of the following is another cause of ozone destruction besides chlorine radicals?
methane
carbon dioxide
nitrogen oxide radicals
sulfur dioxide
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The high stability of CFCs is a result of which strong type of bond?
carbon-hydrogen
carbon-oxygen
carbon-halogen
carbon-carbon
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