2016 · Q33
Which of the following statements concerning atmosphere of the earth are correct?
- 1In stratosphere, temperature increases with altitude.
- 2In mesosphere, temperature decreases with altitude.
- 3The lowest temperature of the atmosphere is recorded in the upper part of mesosphere.
- 4Tropopause is an isothermal zone.
Select the correct answer using the code given below.
General KnowledgeGeography
- A1 and 2 only
- B1, 2 and 3 only
- C3 and 4 only
- D1, 2, 3 and 4
Explanation
Temperature rises with altitude in the stratosphere because ozone absorbs ultraviolet radiation (1 true); it falls with altitude in the mesosphere (2 true); the atmosphere's coldest point, about −90 °C, is at the mesopause in the upper mesosphere (3 true); and the tropopause is the approximately isothermal layer where the tropospheric lapse rate gives way to stratospheric warming (4 true). All four statements are correct.