The GATE Grind

GATE 2021 AG – Question 17

Soil and Water Conservation Engineering · Watershed Management · 1 mark · Multiple choice

In assessing agricultural drought, a negative aridity-index value classifies the area as ______.

  1. Severely arid
  2. Moderately arid
  3. Mildly arid
  4. Non-arid

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Correct answer: (D) Non-arid

Explanation

Under the drought aridity-anomaly convention used in the source, a negative index indicates no positive moisture-deficit anomaly, so the classification is **non-arid, D**. This is an index-specific interpretation; a separate nonnegative climatic aridity ratio would not use negative values.

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