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Which of the following mentioned GHGs has the highest atmospheric lifetime?

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+1 vote
in Environmental Engineering by (81.4k points)
Which of the following mentioned GHGs has the highest atmospheric lifetime?

(a) Carbon tetrafluoride

(b) Nitrous oxide

(c) Methane

(d) CFC

The question was asked in a job interview.

This key question is from Greenhouse Gases in portion Atmosphere & Greenhouse Gases of Environmental Engineering

1 Answer

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Best answer
The correct option is (a) Carbon tetrafluoride

Best explanation: Among the mentioned gases, carbon tetrafluoride has the largest life time of 50,000 years and a GWP of approximately 5000 over a period of 20 years.

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