Pilot

Yes, you can.
Commercial Pilot - Eligibility
A candidate should have scored a minimum aggregate of 50% marks to become eligible for CPL. The minimum age limit for CPL is 17 years, and the maximum age limit is 60 to 65 years. A candidate is required to pass the class 2 medical test to become eligible for CPL.

Hello,
The eligibility criteria for entry into the course for attainment commercial pilot license is twelve with physics and maths. In view of this even if the academy is conducting an entrance exam you should not be worried. This is so since the syllabus will definitely be of equivalent to twelve examinations. I am attaching a link that will give you all the required information about this institute.
https://www.shiksha.com/college/asia-pacific-flight-training-academy-shamshabad-hyderabad-38359
Best wishes to you.

Hello,
Yes, this flying school indeed conducts entrance exam. But as the eligibility is 12th, syllabus for entrance test would surely be of similar difficulty level. I am attaching a link that will give you all the required information.
https://www.shiksha.com/college/asia-pacific-flight-training-academy-shamshabad-hyderabad-38359
Best wishes for your dreams.

For commercial pilot - No age limit
For airline pilot - 36 year.

Generally for freshers it's 36.

Once confirmed with the necessary endorsement, commercial pilots are paid handsomely. Entry-level pilots can earn up to Rs 1.5 Lacs per month with domestic airlines and even higher on international routes. Senior pilots can earn in the vicinity of Rs 5 Lacs upwards per month.

You would have to join as a trainee pilot with an airline.

Hello Moumi Dey,
It is very nice indeed to hear from you that you are interested in becoming commercial pilot. The basic eligibility is 12th with PCM that you obviously have. There is no upper age limit. However to help you I am attaching a link that will give you all the required information about eligibility and all other related issues.
http://igrua.gov.in/Aboutus.htm

Hello S Ram, I can understand and appriciate your desire to become pilot. However eligibility for flying schools 8s 12th with PCM. Unfortunately you do not have this. However I am attaching a link of one of the best flying schools of India. You can get in touch with them to know if they can offer you any exemption. http://igrua.gov.in/Aboutus.htm
Best wishes for your dreams of becoming pilot.