The main use of chlorofluorocarbons is in __________.
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A.
smog
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B.
vehicles
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C.
chimneys
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D.
refrigerants
Correct Answer:
D. refrigerants
Explanation:
Chlorofluorocarbons (CFCs) are synthetic organic compounds primarily utilized as refrigerants in air conditioning and cooling systems. Their stability, non-flammability, and lack of toxicity made them ideal for these applications, as well as for use as aerosol propellants and blowing agents in foam production. However, because they contribute significantly to ozone depletion in the upper atmosphere, their use has been largely phased out under international agreements like the Montreal Protocol. Therefore, the primary application among the choices provided is in refrigerants.
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