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State PCS PYQPrelims 2023

UPPCS · Question 32

With reference to 'El-Nino', which of the following statement(s) is/are correct? 1. El-Nino involves appearance of warm current off the coast of Peru in the eastern Pacific. 2. This warm current increases the temperature of water on the Peruvian coast by 10 degrees C, thereby increasing the amount of plankton in the sea. Select the correct answer using the code given below.

  1. Only 2
  2. Both 1 and 2
  3. Only 1
  4. Neither 1 nor 2
Show answer & explanation

Answer: (C) Only 1

Explanation

El Nino brings warm water off Peru, but it suppresses upwelling and so reduces plankton and fish catch.