UPSC 2014: Consider the following pairs: National Highway - Cities connected 1. NH 4 - Chennai and Hyderabad 2. NH 6 - Mumbai and Kolkata 3. NH 15 - Ahmedabad and Jodhpur Which of the above pairs is/are correctly matched?

NH 4 (old numbering) connected Chennai to Thane (near Mumbai), not Chennai and Hyderabad — so pair 1 is incorrect. NH 6 (old numbering) connected Hazira in Gujarat to Kolkata, passing through Dhule, Nagpur, and Raipur — it did not start from Mumbai — so pair 2 is incorrect. NH 15 (old numbering) ran from Pathankot in Punjab to Samakhiali in Gujarat, passing through Amritsar, Bhatinda, Ganganagar, Bikaner, Jaisalmer, and Barmer — it did not connect Ahmedabad and Jodhpur — so pair 3 is also incorrect. Hence, option (d) — None — is correct.