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?

Table lists important NH numbers with their routes and explicitly shows routes for many NHs (and notes old NH numbers), illustrating that route-to-number mapping is how one checks which cities a given NH connects.

A student could use this pattern to look up NH4 in an equivalent table or map (or note if NH4 was renumbered) to see whether its route includes Chennai–Hyderabad.

Describes the Golden Quadrilateral segments connecting major metros including Chennai and shows which city-pairs are linked by major NH projects.

Knowing which major corridors connect Chennai helps a student rule in/out whether a given NH number (NH4) is likely the Chennai–Hyderabad link by comparing known corridors on a map.

Shows that NH numbering has changed (e.g., NH–44 noted as Old NH7) and gives examples of routes tied to current NH numbers.

A student should consider that 'NH4' might be an old or new designation and check renumbering lists or maps to locate the current route corresponding to NH4.

Defines that National Highways connect state capitals and major cities, implying Hyderabad and Chennai would be linked only if an NH route specifically ran between those capitals.

A student could use this rule plus a map of NH routes to see whether any single NH route directly links the two state capitals.

Notes that National Highways are shown in official maps/figures and maintained by agencies (NHAI, PWD, BRO), indicating authoritative sources exist for verifying any NH's route.

A student could consult an official NH map or NHAI route list (consistent with this practice) to confirm whether NH4 connects Chennai and Hyderabad.

Table of important National Highways gives specific NH numbers with their endpoint cities and intermediate major cities (examples: NH-27 Porbandar–Silchar, NH-48 Delhi–Chennai).

A student could look up the listed routing pattern for NH numbers on a map (or a current NH list) to see if NH-15's listed route passes through Ahmedabad and Jodhpur.

Definition: National Highways are meant for inter-state transport and connect state capitals, major cities and important ports.

Knowing Ahmedabad (major city in Gujarat) and Jodhpur (major city in Rajasthan) are the kinds of places NHs link, a student could check whether NH-15 is designated to connect those two urban centres on a map or NH directory.

Description of the East–West Corridor and other NHDP phases shows that NH corridors are planned to connect places in Gujarat (Porbandar) and across to the northeast, implying many NHs run through Gujarat and neighbouring states.

A student could use a regional map of Gujarat–Rajasthan to see whether an NH labelled 15 would plausibly run between Ahmedabad (Gujarat) and Jodhpur (Rajasthan) along known corridor alignments.

NHDP project descriptions list major corridor endpoints (Porbandar, Silchar, Srinagar, Kanniyakumari) showing that national highways frequently connect port towns and major inland cities across state boundaries.

Using this pattern, a student could reasonably suspect an NH connecting two sizable inland cities (Ahmedabad and Jodhpur) is plausible and then verify by consulting an NH route list or map.