B.Tech

National Institute of Technology Patna is India's sixth oldest engineering institute and is ranked 72 in the NIRF 2021. NIT Patna provides undergraduate (BTech and BArch) programs through its experienced faculty. It has also signed a memorandum of understanding (MoU) with the Handong Global University, South Korea, for the exchange of students, faculty, and research, making way for wonderful opportunities for students.
All this is offered at an affordable fee, which is charged per semester.
According to the updated guidelines available on the old website of NIT Patna, the fee component for BTech students admitted in Academic Session 2018-19 onwards includes a tuition fee of approximately INR 62,500 and hostel and mess charges of approximately INR 25,000 per semester.
So to answer your query, the total fee of INR 4 lakh is the complete fee charged for a full BTech course at NIT Patna, which includes all charges including hostel and mess fees.

M.Sc. In Geology is a 2-year postgraduate course approved by the UGC. For most of the institutions, including those providing distance education, eligibility for admission to the M.Sc. In Geology requires studying geology at the graduate level. One cannot do an M.Sc. In geology after completing a B.Tech in civil engineering because the eligibility criteria are graduation in B.Sc. Geology or applied geology. However, if you have an interest in geology, then you can apply for a M.Tech in geology provided by top colleges like IIT Kanpur. The M.Tech programme in Geological Technology offered by IIT Kanpur has a focus on applied Earth Sciences and consists of 2 semesters of course work and 2 semesters of research. Candidates who possess a B.Tech. Degree in civil or geoscience engineering are eligible to apply for the M.Tech.