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Statement I: Lofting is the most favourable of the classical plume types.

Statement II: A stable layer beneath the plume prevents downward mixing while unstable air above disperses it.

In the light of the above statements, choose the correct answer.

  • A.Both Statement I and Statement II are correct
  • B.Both Statement I and Statement II are incorrect
  • C.Statement I is correct but Statement II is incorrect
  • D.Statement I is incorrect but Statement II is correct

Answer: A

Correct answer: Both Statement I and Statement II are correct

Statement II is the reason for statement I. In lofting the stable layer beneath the plume blocks downward mixing while the unstable air above disperses it upward, so very little ever reaches the ground - which makes it the most favourable of the classical plume types.

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