Freon group of refrigerants are
Nontoxic and non-inflammable
Explanation for correct option:
Option D Nontoxic and non-inflammable
Freon group of refrigerants:
Explanation for incorrect options:
Option A: Inflammable:
Option B: Toxic:
Option C: Non-inflammable and toxic:
Therefore, option (D) is the correct answer. Freon group of refrigerants is non-toxic and non-inflammable.