BCA

Yes you can pursue career as a Cabin Crew. The educational requirement is just 12th pass. Graduation will be additional qualification although it is not a requisite.
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. Coz 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.

Hi Salon, If you have completed BCA you are eligible to apply for Law. But you need to be sure of switching your career stream as you might be asked this question during your job interview. In general, when candidates switch career stream or there is a gap in the job, recruiters often check on the stability. So, in case of law, as it's not clear why you wish to pursue it (assuming inclination of your interest), you will get a job in various fields like lawyers can specialize in Criminal law, Real estate, Civil law and many more. Another important point to highlight is that B.A. LL.B. is a 5-year degree course. Since you have invested in BCA studies usually of 3 years (regular) you will have many years contributed to your studies. Common Entrance tests for law: CLAT and LAWCET. All the best.