Hey Shiv.

As per the eligibility criteria laid out for UPSC exams for various posts of IAS, IPS, IFS officers etc, the minimum educational qualifications required is any degree from any recognised university. There is no specific degree required for this. So as you've done BCA, you are very much eligible to take UPSC exams. There are other eligibility requirements laid out too in respect of age, physical standards etc that you should go through too.

Best of luck 

Hey Shiv,

UPSC is one of the most prestigious Exam in our country and the most difficult one as well. Yes you can give UPSC exam. Eligibility for UPSC is that a candidate must have a 3-4 years bacholers atleast and must be a citizen of India. If you full fill this criteria then you are eligible for Appearing in UPSC.

Best of luck