Is it the 1st round? I attended 2 rounds of infy interviews last month or so.
1st round I was asked basic Angular concepts (pipes, directives, HttpClient, etc.), a bit of RxJS (observables, operators), and some Javascript (data types, async/await, promises, closures).
2nd round, though, was totally weird. The interviewer asked me to tell me about myself, why infy, what I knew about infy, and for some reason was a bit hung up on why I was working in IT if I studied CS (barely any difference between the two practically, imo). He then went on to say, presumably because I had smiled a bit in conversation with him (like one does in any normal conversation), that we're here to work, we should be serious, we can't say that we'll work only 8 hours, and about my introduction that he "didn't care" that I have x years of Angular experience.
This is not to discourage you, but just to caution you about what to expect in the 2nd round. Agree with the other comment though, for the non-technical stuff as long as you speak something with confidence, you'll probably be fine.