Impetus Technologies Associate Software Engineer interview questions

1) WAP for alternate prime numbers till 50 2) WAP for reverse a string 3) How C differ from C++ 4) How exceptions are handled in c++ 5) Encapsulation 6) File handling based questions in C and Python ( Read/write methods , How data of one file copy in another file) 7) Streams in python 8) Data structure/data type in python 9) List vs touple 10) concept of memory management & garbage collector in python 11) database connectivity in python 12) Paging in OS 13) work of OS 14) Memory management and Different Memory in system ( how differ each other) 15) why we use normalisation in DBMS 16) 2nf Vs 3nf 17) what is transitive dependency 18) Best searching algorithm and why 19) link list & Array 20) They give a scenario and ask which data structure should be use and why 21) write SQL query for given condition ( 2 queries in my case / database given)