Hey dear, since you asked about placements firstly i want to tell you that there are some core companies and some mass recruiters. The core companies majorly look for technical stundents so they open their gates for a particular branch only. Whereas, the mass recruiter looks for technical as well as management students too so they open their reach to mostly all the branches. So, i would say yes in some companies of any other branches a civil student can sit for placement.

Dear Aspirant,

According to my knowledge,yes student from any branch can seat in the placement cell of cs,it branch if company and college authorities is giving you permission.The requirement to seat for cs,it placement cell is you should be familiar with programming language such as C,C++,java,data structure,python atleast you should have the basic knowledge of this.

Thank you