Aviation

Yes you are eligible.
In general Candidate Profile for Freshers for cabin crew is as under:
Age: Between 18 and 27 years
Minimum Height: Men - 170 cms and Women - 157 cms
Weight: In proportion to height
Educational Qualification: HSC (10 + 2). Candidates who are appearing for their HSC examinations can also apply
Physical features: Pleasing personality, clear complexion (scars, pimples and blemishes not acceptable) and good eyesight.
Marital Status: Unmarried
Language skills: Fluency in English and Hindi. Proficiency in a foreign language will be an added advantage.
Interactive skills: Excellent communication and good interpersonal skills
Nationality: Indian citizens only
Passport: Must possess a valid Indian passport or should have applied for a passport
Mandatory Documentation: Must possess a Pan Card and Aadhaar Card
So that becomes very clear that it merely requires some grooming to get the job of a cabin crew. They don't demand much from candidates.
You should be interpersonally sound and capable to handle people from different cultures.
Cabin crew is the face of the airline because they face the passengers for the first time.
Foreign languages like German, French, Russian, Arabic, Chinese and Japanese, Can allow you to get an edge over others.
As this allows the airline to roster you on routes where such languages are spoken.

For joining International airline you should either be experienced or you should justify their requirements in all aspects. Foreign airlines like Qatar, Emirates, Etihad, Oman Air, Malaysian Air, etc. Accept cabin crew from Indian origin also. But the standards are set as per their regulations. I would suggest you to firstly join some Indian air career and after you gain some experience you can switch to foreign operators. That will be easier and your chances of getting selected will also improve. In general Candidate Profile for Freshers for cabin crew in India is as under:
Age:Between 18 and 27 years
Minimum Height:Men - 170 cms and Women - 157 cms
Weight:In proportion to height
Educational Qualification:HSC (10 + 2). Candidates who are appearing for their HSC examinations can also apply
Physical features:Pleasing personality, clear complexion (scars, pimples and blemishes not acceptable) and good eyesight
Marital Status:Unmarried
Language skills:Fluency in English and Hindi. Proficiency in a foreign language will be an added advantage. Interactive skills:Excellent communication and good interpersonal skills
Nationality:Indian citizens only
Passport:Must possess a valid Indian passport or should have applied for a passport
Mandatory Documentation :Must possess a Pan Card and Aadhaar Card
So that becomes very clear that it merely requires some grooming to get the job of a cabin crew. They don't demand much from candidates. You should be interpersonal sound and capable to handle people from different cultures. This will help you in foreign airlines also. Cabin crew is the face of the airline because they face the passengers for the first time. Foreign languages like German, French, Russian, Arabic, Chinese and Japanese, Can allow you to get an edge over others and in future for switching job. As this allows the airline to roster you on routes where such languages are spoken.

All the details related to CPL Training are mentioned under:
Student Pilot License (SPL) & Private Pilot License (PPL) are intermediate stages of Commercial Pilot License Training.
You will be issued an SPL by the flying club after some hours of ground classes and an internal exam. Thereafter you shall become eligible to start flying training.
For becoming a commercial pilot, there is a specific eligibility criteria, which you should first be aware of. This is decided on what subjects have you taken in class 12th. It requires 50% marks in PCM to be a pilot. And, even if you have not opted for the same, then you can appear separately for these subjects and become eligible. Further, you should be aware that you are medically fit to be a pilot, so I would suggest you to visithttp://www.dgca.nic.in/medical/medical-ind.htmandgototheclass 2nd examiners tab to find out doctors who will examine you for initial fitness. You can visit any doctorate from the list as per your convenience. Once you are done with class 2nd medical, find out a suitable flying club for you as per your convenience. You can fly in India or abroad. I would suggest you fly in India. Besides finding the club, be aware that you will have to appear for:
1. Air Navigation
2. Aviation Meteorology
3. Air Regulations
4. Aviation Technical
5. Aircraft Specific
6. Radio Telephony
Here, 1-5 are conducted by DGCA and 6 is conducted by WPC. Prepare for these subjects and appear, as exams are conducted every quarterly. For preparation, flying club will help you or there are private instructors available in metro cities as well. You will fly for 200 hours + Clear DGCA and WPC exams + Clear Class 1st medical, then you shall get your CPL. The next license is ATPL, which you shall be able to apply for once. You will then have to probably fund or self-sponsor your type rating on whatever fleet you are selected in an airline. Then, you finally get a job as a pilot. I hope the process is well explained to you. CPL is an expensive affair. It might cost you around Rs.18-20 Lacs for flying + DGCA exams Rs.500/- each exam + Medicals for Rs.10, 000 + endorsements and license issue fees around Rs.25k + Type Rating around Rs.15 Lacs. So, decide wisely before you enter the field.

Yes, the basic requirement for ground staff as per the guidelines by different airlines is having passed higher secondary in any stream from a recognized board. Apart from this, one should have good communication skills, good personality, adaptable to all weather conditions and can work for both shift day and night.
Age: Should be between 18 years and 29 years
Height: 152 cm and above
Weight: In proportion to the height but not less than 50kg.
These are general standards it may vary from airline to airline.
Salaries. The entry-level monthly salary packages for cabin crew in the domestic sector range from Rs 25,000 to Rs 30,000 while for foreign airlines, it is between Rs 45,000 and Rs 1.3 lakh. For the ground staff, salary ranges between Rs 8,000 and Rs 15,000 for freshers.