Pilot Training

Just to correct your question, there are no colleges when you come to CPL, you usually do a CPL course from flying schools.
Flying schools charges are based on fuel prices, fleet, instructors, navigational facilities available, ground classes and the infrastructure available.
There are many flying clubs in India that offer CPL training, the once which you should try firstly are as under:
1. Indira Gandhi Rashtriya Udaan Academy - http://igrua.gov.in/Financial Assistance.htm
2. CAE Gondia - http://www.caeoaa.com/gondia/#.Wjok-5_hXqA
3. Chimes Aviation - https://www.caaindia.com
4. AAA Aviation - http://www.aaa.co.in
5. Nagpur Flying Club - Hangar No. 1, Wardha Rd, Near Airport, Adcajent to DBAI Airport, Sonegaon, Nagpur, Maharashtra 440005
6. MPFC Indore - http://www.mpfc.in
7. BFC , Mumbai - http://thebombayflyingclub.com
8. MPFC Bhopal - http://www.mpfc.in
The fee structure is not fixed hence. Still for Cessna 152 the per hour charge is approximately INR 7000 - 9000.
For Cessna 172 it ranges from INR 9000 - 11000.
And for most multi engine aircrafts the per hour charge ranges from INR 15000 - 20000.
You will have to complete 200 hours to get a CPL license issued by DGCA India.
The accommodation, transportation and documentation charges are paid above the per hour charge. So decide wisely. Good luck.

There are some airlines who actually hire candidates who have a commercial pilot license and the selection process includes:
1. Technical Exam
2. Compass Test
3. Interview
4. Medicals
5. Induction.
Some airline also put Psychometric test and group discussion as a part of their selection procedure.
Others who look for candidates with Type Rating on certain fleet like Airbus or Boeing or ATR, fo for simulator check and interview followed by medicals.
You may target vacancies for CPL holders which are comparatively less in numbers when compared to those of type rated pilots.
So, after CPL, you may have to go for type rating depending on which airline you are targeting and of course, the decision shall also be influenced by the current market.
So, extra expenses after CPL is of getting type rated on any particular fleet to get a job.

Definitely, you can join a pilot training course. The basic eligibility criteria for candidates who are looking to pursue pilot's training course is to have completed 10+2 exam from any recognise board / universities, with physics, chemistry and maths as their subjects.
As far as age is concerned, you should have attained at least 18 years of age at the time of joining such course which I'm sure, you would have.
B.Tech in any stream is not at all required to become a pilot. In fact, no graduation is required to become a commercial pilot.
In case you are eyeing the pilot vacancies that are announced in defence sectors, may it be Air force or Navy or The Indian Army. They usually ask you to be a graduate preferably in science streams. But they have a very strict regulation on the age of the candidate.
They recruit through CDS, NDA and AFCAT for defence pilots.
Good luck.

Hello,
Indian Aviation Academy, based in Andheri suburb of Mumbai offers 10 different types of courses related to aviation. Besides course for Commercial Pilot Licence or CPL, the academy offers other courses related to aviation also. It's flying training is carried out from Juhu airport of Mumbai. It boasts of trained faculty as well as ISO certification. The attached link can give some more information if required.
http://www.indianaviationacademy.com/ourcourses.htm
On the other hand, Ahmedabad Aviation and Aeronautics, Ahmedabad is based in Ahmedabad with access to the airport here as well as access to the airport at Mehasana. This contingency enables this academy to complete flying syllabus earlier than many other flying schools. As per my knowledge, this would definitely be an advantage. The attached link will give further information if required.
http://www.aaa.co.in/
To conclude, I would recommend academy at Ahmedabad for it's access to two airfields and also the availability of a larger number of airplanes for the purpose of training.

Eligibility criteria:
This is a technical course. Students who have passed 10+2 Science stream (with Physics, Chemistry and Mathematics subjects) with minimum 50% aggregate marks are eligible to pursue this course. Diploma holders (with minimum 50% aggregate marks) are also eligible to pursue it.
Note: Minimum marks criteria may vary from one institute to another. Candidate should also be physically and mentally fit.
Admission process:
Some of the institutes follow direct admission process. Some other institutes follow merit based admission process. Usually, Diploma holders are given direct admission. In case of merit admission, marks scored by a student in 10+2 board exam and entrance test are taken into consideration. Many institutes also have a selection interview.
Course details:
Duration: AME training course is 3 years long. Academic program is 2 years long. 6 months are dedicated towards on job training program. The entire program is divided into 6 semesters, with each semester lasting for a period of 6 months.
Evaluation is done at the end of each semester (written and practical tests). Evaluation tests will be present from 1st semester to 5th semester.
The course trains students to inspect, service, maintain and repair aircraft and its various parts. It is a technical training course. On finishing the course and training successfully, candidates will be awarded AME license by the DGCA.
Alternative courses:
Similar courses are- Aeronautical Engineering, Aerospace Engineering, B.Sc. in Aeronautics and B.Sc. in AME.