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Free "Earth Atmosphere Study" App Download (iOS & Android): A CFC molecule has power to remain active in stratosphere up to; MCQ with answers: 60 years, 120 years, 45 years, and 210 years. Practice Ozone Hole MCQ Questions, download Apple Book (Free Chapter) to utilize earth science digital education.

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MCQ 26: A CFC molecule has power to remain active in stratosphere up to:

  1. 120 years
  2. 60 years
  3. 45 years
  4. 210 years

MCQ 27: The simmering lights in polar regions are called:

  1. stars
  2. asteroids
  3. meteors
  4. auroras

MCQ 28: A process which helps to reduce indoor air pollution is called:

  1. acidification
  2. acid shock
  3. ventilation
  4. exhaustion

MCQ 29: Solar energy is radiated by clouds and earth as:

  1. long wave energy
  2. short wave energy
  3. medial wave energy
  4. extreme wave energy

MCQ 30: The process in which gases absorb thermal energy and radiate it towards earth is called:

  1. greenhouse effect
  2. Coriolis effect
  3. global warming
  4. law of effect

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Oceans of World MCQs
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