R-22 (Freon-22) is nontoxic and nonflammable. Which group does it belong to?

R-22 (Freon-22) is nontoxic and nonflammable. Which group does it belong to?

R-22 (Freon-22) is nontoxic and nonflammable. Which group does it belong to?




a) Group A2
b) Group B4
c) Group A1
d) Group A3
e) Group B2


Answer: C


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