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Cyclones

2 UPSC Prelims MCQs tagged "Cyclones". Free practice with answer keys, explanations, and timed mock tests on Anantam IAS.

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  1. Consider the following statements regarding cyclones:

    Consider the following statements regarding cyclones:

    1. AOnly 1 and 4
    2. BOnly 1 and 3
    3. COnly 2 and 4
    4. DOnly 2 and 3
    Answer and explanation

    Correct answer: D

    Statement 1 is reversed: the tropical cyclone's engine is the latent heat of condensation over warm oceans, while the extra-tropical cyclone draws energy from frontal temperature contrasts. Statement 2 is correct, as extra-tropical cyclones decay through occlusion and tropical cyclones weaken once the moisture supply is cut off. Statement 3 is correct on the directions of movement. Statement 4 is wrong because extra-tropical cyclones cover a far larger area than tropical ones. So 2 and 3 are correct.

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    Geography UPSC GPSC-2026 Hard

  2. Consider the following statements:

    Consider the following statements:

    1. AOnly 1 and 2
    2. BOnly 2 and 3
    3. COnly 1
    4. DOnly 3
    Answer and explanation

    Correct answer: A

    Tropical cyclones need sea-surface temperatures above about 27°C, so statement 1 holds, and the Coriolis force is essential to give the system its spin, making statement 2 correct. Statement 3 is wrong because the Coriolis force is zero at the equator and increases toward the poles, which is exactly why cyclones don't form within about 5 degrees of the equator.

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    Geography UPSC GPSC-2026 Medium