1. Where is ozone found?
- In the sky
- In the stratosphere and on the Earth's surface
- In the atmosphere
- All around us
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Other questions in this quiz
2. Which equation demonstrates the reaction beween ozone and a CFCs?
- O3 + Cl --> ClO3
- O3 + CCl2F2 --> CCl2F2O3
- O3 + Cl --> O2 + ClO ClO + O --> Cl + O2
- O3 + CCl2F2 --> CO + 2ClO + F2
3. What is the role of the ozone layer?
- It absorbs the harmful UV radiation from the sun and so protects organisms on Earth from them.
- It makes sure that the Earth does not get too hot.
- It counteracts global warming.
- It is a protective layer in the atmosphere preventing objects from outer space from entering Earth.
4. The reaction between CFCs and ozone is an example of what kind of reaction?
- Electrophilic addition
- Free radical substitution
- Nucleophilic substitution
5. Why were CFCs initially used?
- They are not harmful to human health.
- They are found readily and in abundance naturally.
- They are relatively unreactive, non-toxic and have a low flammability
- They are affordable.