The Shramjeevi Express is a superfast train service that runs between which pair of Indian cities?

Introduction / Context:
Indian Railways operates many named express and superfast trains that connect important cities across the country. For exam aspirants, matching the name of a train with its route is a common type of general awareness question. The Shramjeevi Express is one such train, and this question asks between which two cities it runs.

Given Data / Assumptions:

- The train name is Shramjeevi Express.- Options mention routes between Rajgir, New Delhi, Howrah, and Patna.- We assume standard Indian Railways information that appears in GK books and railway related questions.

Concept / Approach:
The Shramjeevi Express is a superfast train of the East Central Railway zone. It is well known for linking Rajgir in Bihar with New Delhi, the national capital. The train number pairs 12391 and 12392 run between these two points, passing through important stations such as Patna. Understanding that the full route begins at Rajgir and ends at New Delhi allows us to select the correct city pair from the options.

Step-by-Step Solution:
1. Recall that Shramjeevi Express is associated with Bihar and the national capital region.2. Remember that the train originates from Rajgir and terminates at New Delhi, or vice versa depending on the direction.3. Examine each option: one mentions Rajgir and New Delhi, others pair New Delhi or Rajgir separately with Howrah or Patna.4. Since Howrah is involved in many other long distance trains but not as the end point for Shramjeevi Express, those options do not fit.5. Therefore, choose Rajgir and New Delhi as the pair that correctly describes its route.

Verification / Alternative check:
Railway timetables, online booking platforms, and information boards show Shramjeevi Express with train numbers 12391 and 12392 running between Rajgir (RGD) and New Delhi (NDLS). The train passes through Patna but does not terminate there. Remembering the association of this train with labourers and travellers between Bihar and the capital helps confirm Rajgir to New Delhi as its route, rather than any route involving Howrah as a terminus.

Why Other Options Are Wrong:
- New Delhi and Howrah: Several other trains run on this busy corridor, but Shramjeevi Express specifically connects Rajgir and New Delhi.- Patna and Howrah: Patna is on the route but not the terminus for Shramjeevi Express, and Howrah is not its end point.- Howrah and Rajgir: No regular Shramjeevi Express service is listed with Howrah as one terminus; this pairing does not match the official route.

Common Pitfalls:
Because Patna and Howrah are large and well known stations, candidates sometimes assume that any long distance train from Bihar must start or end there. Another confusion is mixing up different named trains that share partial routes. Always focus on the full official starting and ending stations rather than just intermediate stops when answering route based questions.

Final Answer:
The correct option is Rajgir and New Delhi, the two terminal cities between which the Shramjeevi Express operates as a superfast train service.