B.Tech Eligibility

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

Yes, you can get admission here but I am not sure if you will get CSE or not.

TS-EAMCET 2018 College Predictor
Use your TS-EAMCET 2018 rank to see where you can get admission at the link provided below:
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The result is based on admissions data of TS-EAMCET 2017
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https://www.shiksha.com/b-tech/resources/ts-eamcet-college-predictor

Hi,
You need to give a compartment exam. If you qualify in that, you can directly get admission. Many colleges just take the admission on the basis that. You need to just qualify your 12th boards. All the best. Go ahead.

No, it is not possible to get admission in JNTUK without writing AP-EAMCET.