UPSC NDA I 2014 General Ability Paper

Doldrums are a low pressure area around equator after which come the trade wind whose expanse is from tropic of cancer to tropic of capricorn. They move in North-East direction in the Northern hemisphere and North-East in the Southern hemisphere. They are followed by westerlies that prevail in mid latitude between 30 and 60 degrees latitude. As the name suggests polar winds are closer to the poles. The correct answer is (a).