General science questions – Test 14

  1. The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?
  2. The function of heavy water in a nuclear reactor is to
  3. The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
  4. The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?
    1. There are no clouds or water vapour in the lower stratosphere.
    2. There are no vertical winds in the lower stratosphere.
    Which of the statements given above is/are correct in this context?
  5. What is a zoom lens?
  6. What is the difference between a CFL and an LED lamp?
    1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
    2. The average life span of a CFL is much longer than that of an LED lamp
    3. A CFL is less energy-efficient as compared to an LED lamp.
    Which of the statements given above is/are correct?
  7. Which one of following reflects back more sunlight as compared to other three?
  8. Which one of the following is the largest terrestrial wild animal?
  9. Which one of the following processes in the bodies of living organisms is a digestive process?
  10. Seawater (i.e. saltwater) freezes at:
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