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Multiple Choice Questions

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Geography and Environment (MPPCS) World climates

Consider the following statements:

1. The tropical cyclones are intense high pressure areas confined to the area lying between 30 degree East & 30 degree North longitudes in the atmosphere around which high velocity winds below.

2. A tropical cyclone or hurricane is like a heat engine that is energized by the release of latent heat on the condensation of moisture that the wind gathers after moving over the ocean & seas.

Which of the following statements given above is/are incorrect with regard to the tropical cyclones?

1only

2 only

Both 1 & 2

neither 1 nor 2

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Explanation:

1. Tropical cyclones are intense low pressure zones usually occur within a band from 20 Deg North to 20 Deg South of the equator. They do not happen at all times of the year but are most common between mid summer and autumn. So for the Southern Hemisphere this is between December and April while in the Northern Hemisphere, it is between June and October.

2. Second statement is correct as Ocean waters having temperatures of 27° C or more is the source of moisture which feeds the storm. The condensation of moisture releases enough latent heat of condensation to drive the storm.