A. chlorofluorocarbon
B. carbon (ii) oxide
C. hydrogen sulphide
D. sulphur (iv) oxide
Correct Answer: Option A
A. chlorofluorocarbon
A. chlorofluorocarbon
B. carbon (ii) oxide
C. hydrogen sulphide
D. sulphur (iv) oxide
Correct Answer: Option A
A. chlorofluorocarbon
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