CA

Hi, don't be confused. Take a breath and forget about everything. First, you should know what are both. Then, choose without any hesitation what you liked during reading. Both are reputed having almost same salary income but if you go with B.Tech, then prepare only for IIT. Otherwise, leave it, literally, saying leave it. So, starts with CA
Chartered Accountants are regarded as one of the highest paying career professionals in India. Chartered Accountancy is a good career option if you are interested in subjects like taxation and accounting. The career path to become a Chartered Account CA is challenging but is very promising. The entire Chartered Accountancy course duration is almost 5 years. So if you are willing to take up a career as a Chartered Accountant, you shall be prepared to devote that much time to your education. There is a good demand for Chartered Accountancy professionals in India within private as well as public organisations. A qualified CA is hired to deal with the account details of an organisation. They also help in solving disputes and preventing bankruptcy. If you are planning to pursue this career then it is a better idea to start after class 10. Find out the Chartered Accountancy course details below:
Chartered Accountancy Course Details and CA Exams:
CPT (Common Proficiency Test)
IPCC (Integrated Professional Competence Course)
FC (Final course)

Hello,
Since your interest lies in the future (assuming after 5-10 years) of CA let me answer your question in two prospects:
1) Future CA demand in India- Undoubtedly, there will always be a rising demand for CA professionals due to a growing number of companies in India. However, this also means that you need to always be competent in your career to grab better opportunities in the future since the companies will hire only the best professionals.
2) Mediocre CA jobs- Since many tasks of a typical CA is a routine job with some procedural working on a given assignment, there is always a room for automation. With the software companies emerging in the financial sector, chances are high that CA professionals will be seen using sophisticated software in the near future (which will obviously cut down jobs for the mediocre ones). Point of the verdict- The profession of CA is highly promising in the near future provided you keep your mind open to different technologies and be a learner for a lifetime, which will also help you to be a step ahead of others.
I hope this helped. Have a great career ahead.