1) What is a Data Structure? 2) What do you mean by Data abstraction? 3) Function Overloading vs function Overriding? 4) Define Encapsulation with Example. 5) Why Multiple inheritance is not possible in java? 6) What are the Tree ADT’s you were aware of ? 7) Difference between Full Binary Tree and Complete Binary Tree? 8) what is mean by AVL Tree? 9) Given an array of integers (0-9), you want to remove the duplicates in linear Time complexity.