Civil Services Prep

Prelims MCQ · Geography

Warm water from the central Pacific Ocean may drift towards the South American coast and replace the cool Peruvian Current. This oceanic change is associated with pressure changes over the central Pacific and Australia. In strong years, weather variations may include heavy rainfall on the arid west coast of South America, drought in Australia and sometimes India, and floods in China.

Which one of the following conclusions is most appropriate?

  1. El Niño is merely a local change in ocean temperature with no connection to atmospheric pressure.
  2. The Southern Oscillation refers only to the replacement of the cool Peruvian Current by warm water.
  3. ENSO is a coupled ocean-atmosphere phenomenon that can produce distant weather effects and assist long-range forecasting.
  4. A strong ENSO event produces uniformly wetter conditions across all affected regions.
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  2. A place has the following characteristics: Its underlying land surface heats rapidly during summer and cools…
  3. A stream on one side of a divide has a steeper gradient and receives more precipitation than a neighbouring…
  4. A survey identifies three plate-boundary settings: At boundary X, normal and reverse magnetic strips parallel…
  5. Although the vertical pressure-gradient force in the lower atmosphere is much greater than the horizontal…
  6. An earthquake releases energy at a point below the Earth’s surface. Which one of the following correctly…