B.Tech Eligibility

You must go for AMIE. It is solely for working aspirants being a continuing education. It is recognized by Government of India. You may get full information on http://www.amiestudycircle.com.

If you have 70% marks consistently in your total academic career then you won't face any problem to take admission in Amity and we all know that it is a great university.

Bhartiya Vidhyapeeth Pune- eligibility for B.Tech admissions:
10+2 with Maths and Physics as compulsory subjects along with any one of following subjects: Chemistry, Computer Science, Biotechnology, or Biology with 50% marks (45% for SC/ST/ PH) in aggregate. Diploma in Engineering/ Technology holders are also eligible to apply
CET, MHTCET JEE are the entrance exams on the basis of which admissions are done. Admission counselling through CET result are: June 18 to 22, 2018 (for merit no. 1 to 5000) and June 25 to 27, 2018 (for merit no. 5001 to 8000). .

Minimum Eligibility Criteria for UG and PG courses:
Minimum eligibility to apply for UG courses offered by Bharati Vidyapeeth University is 50% marks in Class XII or equivalent from a recognized board or university. Candidates applying to PG courses must be Graduates with minimum 50% marks or equivalent from a recognized university. There's a provision of relaxation of 5% for SC/ST candidates.

For engineering maths is compulsory, otherwise you are not eligible for engineering. As in engineering you have to study mathematics in the whole degree of B.Tech. That's why mathematics is required.

You cannot get it. firstly you have to clear it. because either you should have PCB or PCM. Through PCM you can get admission in the engineering college. If you have Maths but failed in physics then also you are not eligible. So clear out the physics.
All the best

Since you have very less board marks, you are not likely to get into it(assuming you are from general).
Also, compare your JEE mains marks with the last year's CSE cutoff.
Category Opening_Rank (HS) Closing_Rank (HS) Opening_Rank (AI) Closing_Rank (AI)
General 36088 - 61968 - 11353 - 27087
Schedule Caste 7972 - 10142 - 4193 - 5599
Schedule Tribe 33023 - 73029 - 762 - 976
General Person with Disability 2069 -3021 - NA - NA
Other Backward Class 24097 - 28242 - 6403 - 9673
Hope it helps.

Yes, you can apply. To get admission, either you have to crack GUJCET or JEE Mains with good rank.

Admission is based on the rank obtained in JEE Mains. Interested candidates can apply online with required information. For further details regarding this course please refer to the link provided below:
https://www.shiksha.com/b-tech/course/b-e-in-computer-science-and-engineering-rajiv-gandhi-proudyogiki-vishwavidyalaya-bhopal-271487