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MCQs

Total Questions : 26 | Page 3 of 3 pages
Question 21. The thermosphere is situated above
  1.    12 Km
  2.    50 Km
  3.    80 Km
  4.    10 Km
 Discuss Question
Answer: Option C. -> 80 Km
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 22. The temperature variation in the stratosphere is about
  1.    −5 °C to 50 °C
  2.    −5 °C to 50 °C
  3.    10 °C to 20 °C
  4.    −55 °C to −5 °C
 Discuss Question
Answer: Option D. -> −55 °C to −5 °C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 23. The upset caused in the natural balance of concentration of greenhouse gases is called
  1.    pollution
  2.    global warming
  3.    atmospheric poisoning
  4.    earth heating
 Discuss Question
Answer: Option B. -> global warming
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 24. The compound which is responsible for acid rain is
  1.    sulfur
  2.    sulfur dioxide
  3.    sulfur trioxide
  4.    nitrogen
 Discuss Question
Answer: Option C. -> sulfur trioxide
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 25. Percentage of argon in the air is
  1.    0.78
  2.    0.21
  3.    0.0093
  4.    0.0004
 Discuss Question
Answer: Option C. -> 0.0093
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 26. The layer which protects the earth from being hit by meteoroids is
  1.    troposphere
  2.    mesosphere
  3.    thermosphere
  4.    stratosphere
 Discuss Question
Answer: Option B. -> mesosphere
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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