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Trees In Data Structures — Part 2 MCQs with Explanations

Practice high-yield Computer Science & IT MCQs on Trees In Data Structures — Part 2 with worked academic solutions for PPSC, FPSC, CSS, PMS, NTS.

Questions
40
Difficulty Level
Exam-Level
Target Exams
PPSC, FPSC, CSS...
Estimated Time
48 mins
Exam-Level PPSC FPSC CSS PMS NTS
Verified for Commission Syllabus • Oct 14, 2026
40

Verified Practice Questions

Interactive test mode with detailed academic worked solutions

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Question 1 of 40
★ PPSC ★ FPSC

What type of tree is used in databases for indexing?

Question 2 of 40
★ PPSC ★ FPSC

What is the primary use of a Trie data structure?

Question 3 of 40
★ PPSC ★ FPSC

In a B-Tree, what is the minimum number of keys in a non-root node?

Question 4 of 40
★ PPSC ★ FPSC

What is the primary benefit of using a B+ Tree over a B-Tree?

Question 5 of 40
★ PPSC ★ FPSC

Which property is maintained in a Red-Black Tree to ensure balanced height?

Question 6 of 40
★ PPSC ★ FPSC

Who is the ancestor of Node G?

Question 7 of 40
★ PPSC ★ FPSC

Bigger the query rectangle the better is the query efficiency.

Question 8 of 40
★ PPSC ★ FPSC

Consider the given syntax tree. Assume that division has the lowest precedence than addition, subtraction and multiplication. Addition and subtraction have the same precedence but more than multiplication. Which of the following expression can be given by the following syntax tree?

Question 9 of 40
★ PPSC ★ FPSC

What is the depth of the root node of K-ary tree?

Question 10 of 40
★ PPSC ★ FPSC

In an expression tree algorithm, what happens when an operand is encountered?

Question 11 of 40
★ PPSC ★ FPSC

How many extra nodes are there in Full K-ary tree than complete K-ary tree?

Question 12 of 40
★ PPSC ★ FPSC

What is the depth of the root node of the ternary tree?

Question 13 of 40
★ PPSC ★ FPSC

What is the Height of the given ternary tree?

Question 14 of 40
★ PPSC ★ FPSC

Who is descendant of Node B?

Question 15 of 40
★ PPSC ★ FPSC

Which node is the Leaf node in the following K-ary tree?

Question 16 of 40
★ PPSC ★ FPSC

Which node is the root node of the following ternary tree?

Question 17 of 40
★ PPSC ★ FPSC

What will be the time complexity of delete operation if all the candidates are evenly spaced so that each bin has constant no. of candidates? (m = number of bins intersecting candidate intersects)

Question 18 of 40
★ PPSC ★ FPSC

How many properties will an equivalent relationship satisfy?

Question 19 of 40
★ PPSC ★ FPSC

What is the size of Node B in given K-ary tree?

Question 20 of 40
★ PPSC ★ FPSC

Which data structure is used in the syntax analysis phase of the compiler?

Question 21 of 40
★ PPSC ★ FPSC

What will be the time complexity of insertion operation if all the candidates are evenly spaced so that each bin has constant no. of candidates? (m = number of bins intersecting candidate intersects)

Question 22 of 40
★ PPSC ★ FPSC

What is the worst case time complexity of insertion operation(n =no. of candidates)?

Question 23 of 40
★ PPSC ★ FPSC

What is the condition for an equivalence relation if two cities are related within a country?

Question 24 of 40
★ PPSC ★ FPSC

When executing a sequence of Unions, a node of rank r must have at least 2 r descendants.

Question 25 of 40
★ PPSC ★ FPSC

In an abstract syntax tree, each internal node represents an operand and each leaf node represents an operator.

Question 26 of 40
★ PPSC ★ FPSC

Parse tree is constructed from the tokens produced by lexical analyzer.

Question 27 of 40
★ PPSC ★ FPSC

Which node is the child node of the Node D in the following ternary tree?

Question 28 of 40
★ PPSC ★ FPSC

Which node is the child node of the Node B in the following K-ary tree?

Question 29 of 40
★ PPSC ★ FPSC

While evaluating the parse tree, which traversal technique is used to give the original input string?

Question 30 of 40
★ PPSC ★ FPSC

What is the definition for Ackermann's function?

Question 31 of 40
★ PPSC ★ FPSC

What is the run time of finding the nearest neighbour in a k-d tree?

Question 32 of 40
★ PPSC ★ FPSC

An expression tree is a kind of?

Question 33 of 40
★ PPSC ★ FPSC

What will be the correct sequence of insertion for the following k-d tree?

Question 34 of 40
★ PPSC ★ FPSC

Can leaf node be called child node in a ternary tree?

Question 35 of 40
★ PPSC ★ FPSC

Which node is the root node of the following K-ary tree?

Question 36 of 40
★ PPSC ★ FPSC

A node can have a minimum of one child.

Question 37 of 40
★ PPSC ★ FPSC

Is parent node of Node 4 and root node of the given K-ary tree same?

Question 38 of 40
★ PPSC ★ FPSC

How many strategies are followed to solve a dynamic equivalence problem?

Question 39 of 40
★ PPSC ★ FPSC

Path Compression algorithm performs in which of the following operations?

Question 40 of 40
★ PPSC ★ FPSC

Which node is the child node of Node C in the following K-ary tree?

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In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.

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