1) He asked me one aptitude question ( roap and matchbox related)
Technical Questions :
Backend (Python or java ):
1) Python -- Namespace vs scope & OOPS (encapsulation , inheritance with examples)
2) write a program for anagram in java or python
3) Multi-threading in java
3) He given me one List , and wrie Merge sort in java or python
4) java 8 features
Frontend( React Library) questions :
1) Basic Html & CSS questions ( tags and positions in css)
2) differnce b/w apply vs bind vs call in javascript & this keyword & Event bubbling
3) Advantage of react.js over other like Angular.js
4) Life-cycle of class components
5) Hooks (useEffect ,usecallback , usememo)
6) He asked about Basic Redux like (Why we use redux like that)