Which one of the following pairs is not correctly matched? Railway Zone Headquarters

Option 2 is not correctly matched. Authoritative lists of zonal headquarters show South Eastern Railway (SER) is headquartered at Kolkata, while East Coast (also called East Coast Railway) has its headquarters at Bhubaneswar; thus Bhubaneswar belongs to East Coast, not SER [2]. The other three pairs are correctly matched: North Eastern Railway — Gorakhpur; Eastern Railway — Kolkata; South East Central Railway — Bilaspur, as recorded in the same official/academic listings of zones and their headquarters [2]. Therefore the mismatched pair among the options is South Eastern Railway — Bhubaneshwar (Option 2).

Sources

1. [1] INDIA PEOPLE AND ECONOMY, TEXTBOOK IN GEOGRAPHY FOR CLASS XII (NCERT 2025 ed.) > Chapter 7: Transport and Communication > Table 7.2 : Indian Railways: Railway Zones and Headquarters > p. 79
2. [2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 12: Transport, Communications and Trade > Table 12.3 > p. 15