CBSE 10th

Your class 12th marks are what really matters in university.

You need to complete your B.Tech degree first, only then you can apply for anything else further.

1 REGISTER FOR CPT
The first step is to register with the ICAI for CPT. This can be done by students who have passed 10th standard. Thus, it is safe to say that the first step towards becoming a CA can be taken after completing 10th standard.
2 APPEAR FOR CPT EXAM AND CLEAR IT
After completing 12th st

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This will depends on what college you get in counseling after cat. If it is IIM then there is a job security for sure.

Yes, you can,just try to score good in CAT.

Hello,
CMAT 2017 scores won't be accepted for next year's admissions anywhere in India; you have to give CMAT 2020. Yes, with that score, you should ideally get a call.

That's a tricky part. I would suggest you get in touch with Delhi University officials for clarity on such things.

Yes, you can apply for pilot training after completing the class 10th.