B.Tech

Yes, for admission in B.Tech after diploma you need to have 3 years of diploma in any branch of engineering. This allows diploma holders to take direct entry in 2nd year of B.Tech engineering.
Selection process varies from state to state and college to college. Some colleges take admission through la

Hi,
You first make sure of your eligibility to apply for the entrance exam conducted by the respective university. Otherwise, you can apply to the common admission. First of all apply for the respective colleges.

Please follow the below mentioned link:
http://goo.gl/uVTVMt

Take one subject you like the most, study well and give interviews on openings related to that subject until you get a job.

Well, being a bio student you cannot opt for an IIT to study B.Tech as IIT admission is strictly on the basis of JEE scores. Though, there are colleges like:
1. SRM.
2. LPU.
3. DY Patil and some state colleges those offer B.Tech/BE biotechnology to bio students as well.

Hi Bikash,
Can you please specify the institute name you are asking fees structure about ?

Apply for WBJEE and use this link to see eligibility criteria:
http://goo.gl/XFdfmm

Dear applicant we have B.Tech (Mechanical/Aerospace/Materials Engineering)

Dear Student,
Now many university do offer this field to PCB or PCM students but you need to check university wise eligibility and admission procedure.
All the best.

There is no difference. Both have equal reputation. A university will just adopt it. Like in India, we use BE B.Tech. In USA, it is BS. ME and M.Tech are equivalent to MS.