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Punjab Rescue 1122 Computer Operator Computer Science: Practice MCQs with Answers

Practise Punjab Rescue 1122 Computer Operator Computer Science practice MCQs in sets of about 20 questions with instant answers and explanations. This page focuses on mixed practice sets across the full question bank, helping you build accuracy and speed for the actual Punjab Rescue 1122 Computer Operator paper.

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Sample Punjab Rescue 1122 Computer Operator Computer Science practice questions

  1. Q1. What is the shortcut key for "Decrease Font Size" of the selected text?

    • A) Ctrl + Shift + >
    • B) Ctrl + Shift + <
    • C) Ctrl + >
    • D) Ctrl + <

    Answer: Ctrl + Shift + <

  2. Q2. Which OOP principle allows a method to have different behaviors depending on the object calling it?

    • A) Inheritance
    • B) Encapsulation
    • C) Abstraction
    • D) Polymorphism

    Answer: Polymorphism

  3. Q3. In a hash table, what is the average time complexity for insertion and retrieval?

    • A) O(n)
    • B) O(log n)
    • C) O(n²)
    • D) O(1)

    Answer: O(1)

  4. Q4. What is the time complexity of linear search in an unsorted array?

    • A) O(1)
    • B) O(log n)
    • C) O(n)
    • D) O(n²)

    Answer: O(n)

  5. Q5. In a RIGHT JOIN, which table's rows are all returned regardless of a match?

    • A) Left table
    • B) Both tables equally
    • C) The joined result table
    • D) Right table

    Answer: Right table

Frequently asked questions

What are practice Computer Science MCQs for Punjab Rescue 1122 Computer Operator?

Practice Computer Science MCQs are mixed practice sets across the full question bank. On Imtehan they are grouped into short sets so you can review one topic at a time before moving to timed mocks.

How many Punjab Rescue 1122 Computer Operator Computer Science practice questions can I practise?

Imtehan organises Punjab Rescue 1122 Computer Operator Computer Science questions into multiple sets. Start with the sample questions below, then open a set to practise interactively with scoring and explanations.

Is Punjab Rescue 1122 Computer Operator Computer Science practice practice free?

Yes — you can practise Punjab Rescue 1122 Computer Operator Computer Science MCQs for free on Imtehan. Premium unlocks detailed analytics and unlimited mock attempts.

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