Before diving further, below are the terms that will help in understanding this in a better way.
• Zones: India is divided into four seismic zones when it comes to the severity of earthquakes. These are Zone 5 to Zone 2. The Zone 5 lists places with the highest risk, whereas Zone 2 has areas with the lowest risk.
Zone 5: Very High Damage Risk
Zone 4: High Damage Risk
Zone 3: Moderate Damage Risk
Zone 2: Low Damage Risk
• Seismicity: This is defined as the number of times an area is vulnerable to earthquakes. The higher the seismicity level higher are the chances.
• Richter Magnitude Scale: These range from 1.0 to 9.0 and higher. Earthquakes with magnitude 4.9 and lower do not generally cause damage. The ones with Richter magnitude 5.0 to 5.9 are considered moderate in nature. Lastly, magnitudes of 6.0 to 9.0+ cause extreme destruction.
So, the places that are classified in zone 5 are the most prone to earthquakes.
2) Kashmir valley
4) Western and Central Himalayas
5) North and Central Bihar
6) Raxaul, Bihar
7) Rann of Kutch in Gujarat
8) Andaman and Nicobar Islands
10) Patan and Koynanagar in Maharashtra
11) All northeastern states (Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim, Tripura)
12) Sundarbans forest
14) Majha, North Punjab
15) Western Uttar Pradesh
16) Jalpaiguri and Malda division in Bengal
Reference: National Disaster Management Plan, “Annexure-II: Hazard Vulnerability Maps for India” retrieved from the web on 3rd April 2018.