I am pursuing bca 2nd year nd i want to be prepare for IAS exam or i should do mca

It is your interest.but better if you first complete your education and then prepare for upsc.

For preparation for IAS exam you wok hard , but you also have to secure future with any other course you can study for IAS side by side ,

Dear Akash, You should prepare for IAS while doing MCA,both at a time. If you couldn't make it to IAS at least you will complete MCA, and when you prepare for IAS that means you can crack many other competitive exams.So there is no harm in trying IAS while doing MCA. Good Luck .Officer