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Question
An inversion of smoke escape occurs if
Options:
A .  layer of warm air continually replaces the cold air
B .  layer of warm air acts like a lid and does not allow the cold air and smoke to escape
C .  hot air and smoke react to form smog
D .  cold air acts as a lid and prevents escape of smoke and sulphur dioxide
Answer: Option B
Answer: (b).layer of warm air acts like a lid and does not allow the cold air and smoke to escape

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