India is divided into how many earthquake zones (seismic zones)?

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This question was previously asked in

SSC CHSL Previous Paper 120 (Held On: 19 March 2020 Shift 1)

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Answer 1

The correct answer is 4.

Important Points

Based on historical seismic activity, the Bureau of Indian Standards has categorized regions in India into four seismic zones: zones II, III, IV and V.
Of these, the most seismically active area is Zone V and the least active is Zone II.
There is a history of devastating earthquakes on the Indian subcontinent.
The key cause for the high frequency and severity of earthquakes is that the Indian plate is driving into Asia at a rate of roughly 47 mm/year.
India's geological figures indicate that about 54 percent of the land is prone to earthquakes.
Research by the World Bank and the United Nations predicts that by 2050, about 200 million urban dwellers in India will be vulnerable to storms and earthquakes.
The most recent edition of India's seismic zoning map given in India's earthquake-resistant design code [IS 1893 (Part 1) 2002] assigns four degrees of seismicity in terms of zone factors for India.
In other words, unlike its previous edition, which consisted of five or six zones for the region, India's earthquake zoning map divides India into four seismic zones (Zone 2, 3, 4, and 5).
According to the new zoning map, the maximum degree of seismicity is predicted in Zone 5, while the lowest level of seismicity is correlated with Zone 2.

Revised earthquake hazard zone map of India

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