Based on different factors, you can categorize the IITs into various groups. For example, academically, the top IITs are IIT Kanpur, IIT KGP, and IIT Bombay. Similarly, IIT Guwahati is known for its top-notch accommodation facilities with single rooms allotted to every student. The campus encompassed by natural beauty is second only to IIT Roorkee. 

Universities like IIT BHU and IT BHU despite being old, haven’t been able to reach the level of IIT Kanpur or Kharagpur. However, it does give a slight edge to IIT Delhi in terms of academics 

Honestly, every student is aware of the actual credibility of his institute and chooses it anyway. 

Either the Institute aligns with his preferences or that particular IIT was the only IIT he could make it into. So IITians don’t usually fight amongst themselves unless it’s an outsider trying to trigger them.

My answer might contrast with the opinion of many. Most people go after IIT Roorkee dual degree and consider it a highly esteemed program. In my opinion, the dual degree itself is not a very good option although IIT Roorkee is an excellent institute.

People forget that recruiters do not consider 4-year or 5-year degree holders any differently and offer them similar profiles. In Fact, some recruiters even consider you inferior to BTech students. Moreover, unlike others getting PPOs a dual degree student is not allowed to even sit in the interviews during this time because you won’t be able to join for at least 2 more years.

Academically, both B.Tech and Dual degrees are similar and the 5th year usually comprises project work and wasting time. When it’s time for interviews you are made to sit with juniors and that lowers your confidence all the more. Moreover, if you are planning to attempt CAT or UPSC, this degree is useless. The only advantage probably is the additional one-year college life experience.

Before I talk about the credibility of both branches, let’s understand the basic difference between them. Geology is basically an observational science that tries to explain various phenomena and processes taking place at or near the surface of the Earth. On the other hand, Geophysics uses physical tools like Gravity, Potential, Seismic, Magnetic, etc. to study the interior of the Earth. It’s more like a branch of Geology itself. 

The coursework in Geological technology covers topics related to rocks, minerals, ores, volcanoes, mountains, oceans, glaciers, sediments, petroleum reservoirs, landslides, earthquakes, geoinformatics, and much more. The curriculum is similar to that of Applied Geology. The coursework in Geophysics comprises basic geological concepts along with detailed Geophysics concepts. Both branch students can opt for interdisciplinary courses as departmental electives. This initiative helps the students to gain an overall knowledge of Earth Sciences.

Placements-wise, both offer similar opportunities with the core recruiter being the same; the Energy Sector - Oil and Coal industry. Mineral exploration also offers core jobs to these two branches. The opportunities offered are equal and any difference stems from the individual's performance and not the branch’s credibility.

The majority of students are inclined towards research with the Geology students having an edge over Geophysical students in this aspect. For those seeking a management position or preparing for IAS, these two branches are the best owing to their light workload.