1. Ammonia |
2. Carbon dioxide |
3. Dichlorodifluoro methane |
4. Tetrafluoromethane |
A) 1 - 2 - 3 - 4
B) 4 - 3 - 1 - 2
C) 3 - 1 - 2 - 4
D) 2 - 4 - 1 - 3
Correct Answer: B
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