Binary trees MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 15, 2025

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1. : What is a binary tree?





2. : Which of the following statements is true about binary trees?





3. : What is a binary search tree (BST)?





4. : What is the minimum number of nodes in a binary tree of height 3?





5. : What is the maximum number of nodes in a binary tree of height 4?





6. : Which traversal visits the nodes in the order: left subtree, root, right subtree?





7. : In a binary tree, if a node has no children, it is called a:





8. : Which traversal visits the root node first, then the left subtree, and finally the right subtree?





9. : Which of the following operations can be efficiently implemented using a binary search tree?





10. : Which traversal visits the nodes in the order: left subtree, right subtree, root?





11. : What is the time complexity of searching for an element in a balanced binary search tree?





12. : Which of the following operations requires the worst-case time complexity in a binary search tree?





13. : What is the height of a binary tree with only one node?





14. : Which traversal is used to create a copy of a binary tree?





15. : In a binary tree, what is the maximum number of nodes at level 3?





16. : Which traversal can be used to evaluate postfix expressions?





17. : Which traversal is commonly used to sort elements in a binary search tree in ascending order?





18. : Which of the following is NOT a valid binary tree traversal?





19. : What is the maximum number of leaf nodes in a binary tree with 15 nodes?





20. : Which traversal visits all the levels of nodes in order from top to bottom, left to right?





   

Data Structures MCQs

Basic Concepts
  1. Introduction to Data Structures
  2. Complexity Analysis MCQs
Linear Data Structures MCQs
  1. Arrays MCQs
  2. Linked Lists MCQs
  3. Stacks MCQs
  4. Queues MCQs
Non-Linear Data Structures MCQs
  1. Trees MCQs
  2. Heaps MCQs
  3. Graphs MCQs
Hashing MCQs MCQs
  1. Hash Tables
Sorting and Searching Algorithms MCQs 
  1. Sorting Algorithms MCQs
  2. Searching Algorithms MCQs
Miscellaneous
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  2. String Manipulation Algorithms MCQs
  1. Data Structures MCQs 1
  2. Data Structures MCQs 2
  3. Data Structures MCQs 3
  4. Data Structures MCQs 4
  5. Data Structures MCQs 5
  6. Stacks Solved MCQs
  7. Queues MCQs
  8. pointer mcqs
  9. Array MCQs
 

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