India Veterinary Research Institute is located at

The correct answer is A) Bareilly. IVRI is located at Izatnagar, which falls under Bareilly district in Uttar Pradesh. The institute began in 1889 as the Imperial Bacteriological Laboratory at Mukteswar in Kumaon and shifted to Izatnagar in 1936. It is India's apex body for veterinary and animal sciences research, which is why the location is a favourite static question.

Why the others are wrong:

• Mathura: The Central Institute for Research on Goats is at Makhdoom, near Mathura. It is a different ICAR institute with a different mandate.
• Karnal: The National Dairy Research Institute is at Karnal, Haryana. It works on dairy science, not on the veterinary research mandate of IVRI.
• Patna: Patna has the Bihar Veterinary College, a teaching institution, not the national veterinary research apex institute.

The concept here is the ICAR network of institutes and their mandates. For Mains, IVRI links to livestock health, zoonoses and the One Health approach, which are relevant to GS-3 on animal diseases and biosecurity.

Trap: Candidates remember 'Karnal' and 'Mathura' as agricultural or animal research hubs and pick one of them without checking the specific institute named in the question.