Geography solved mcqs free download in pdf. 11. Trade winds of northern hemisphere blow from north east to the south west because of? 12. Thunderbolt of Asia is which country? 13. Equator passes through which one of the following countries? 14. The depletion of ozone layer is mainly caused by? 15. Which layer of the atmosphere provides ideal conditions for flying airplanes? 16. Through wihch one of the following countries, the equator does not pass? 17. A line on a map joining places of equal monthly or yearly rainfall is called? 18. The Earth revolves around the Sun in an elliptical orbit. Its speed? 19. The origin of earth dates back to approx.? 20. "Ecliptic" is the term used for?