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MCQs

Total Questions : 26 | Page 1 of 3 pages
Question 1. Percentage of neon in the air is
  1.    0.0018
  2.    0.0019
  3.    0.002
  4.    0.0021
 Discuss Question
Answer: Option A. -> 0.0018
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. Solvents used for cleaning electronic circuit boards are
  1.    chlorofluorocarbons
  2.    carbons
  3.    fluorides
  4.    grease
 Discuss Question
Answer: Option A. -> chlorofluorocarbons
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. The atmosphere is divided in to
  1.    2 layers
  2.    3 layers
  3.    1 layer
  4.    4 layers
 Discuss Question
Answer: Option D. -> 4 layers
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. At every 1 km increase in altitude, the air gets about
  1.    10 °C cooler
  2.    6.5 °C hotter
  3.    6.5 °C cooler
  4.    20 °C cooler
 Discuss Question
Answer: Option C. -> 6.5 °C cooler
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. When ozone absorbs UV radiation, the energy is converted in to
  1.    light
  2.    sound
  3.    heat
  4.    electricity
 Discuss Question
Answer: Option C. -> heat
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. Percentage of oxygen in the air is
  1.    0.78
  2.    0.21
  3.    0.0093
  4.    0.0004
 Discuss Question
Answer: Option B. -> 0.21
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. The pH of acid rain is
  1.    more than 5.6
  2.    less than 5.6
  3.    10
  4.    7
 Discuss Question
Answer: Option B. -> less than 5.6
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The gas responsible for global warming is
  1.    oxygen
  2.    carbon dioxide
  3.    carbon monoxide
  4.    oxygen
 Discuss Question
Answer: Option B. -> carbon dioxide
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. The temperature of the thermosphere is up to
  1.    120 °C
  2.    1200 °C
  3.    1800 °C
  4.    1000 °C
 Discuss Question
Answer: Option C. -> 1800 °C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. Percentage of nitrogen in the air is
  1.    0.78
  2.    0.21
  3.    0.0093
  4.    0.0004
 Discuss Question
Answer: Option A. -> 0.78
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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