MCQs — Applications of Computer Science

Practice questions for Computer Science.

Question 1

Artificial intelligence (AI) is the ability of a computer or machine to:

A. Store data permanently
B. Perform tasks that normally need human intelligence
C. Connect to the internet
D. Print documents quickly
Question 2

Which of the following is an example of AI?

A. A basic calculator
B. A printer
C. A paper diary
D. A voice assistant that answers spoken questions
Question 3

Machine learning is a part of AI in which computers:

A. Learn from data and improve with experience
B. Copy files from one place to another
C. Only follow fixed instructions
D. Only store information
Question 4

In supervised machine learning, the computer is trained using:

A. Unlabelled data only
B. No data at all
C. Labelled data
D. Only hardware signals
Question 5

In unsupervised machine learning, the computer works with:

A. Unlabelled data and finds patterns on its own
B. Data with the correct answers already given
C. Only a teacher's instructions
D. Only labelled data
Question 6

Presenting an AI-written essay as your own work without credit is an example of:

A. Compression
B. Encryption
C. Formatting
D. Plagiarism
Question 7

Which AI tool is mainly used to check and improve grammar and spelling in writing?

A. Lovo AI
B. Google Assistant
C. Grammarly
D. Excel
Question 8

Lovo AI is mainly used for:

A. Editing photographs only
B. Generating realistic voices from text
C. Checking spelling only
D. Playing games
Question 9

Google Assistant is an AI tool that mainly:

A. Creates spreadsheets only
B. Repairs computer hardware
C. Blocks all websites
D. Responds to voice commands and helps with everyday tasks
Question 10

Tools such as Grammarly read the text you type. Which ethical concern does this mainly raise?

A. Faster typing speed
B. Privacy of personal or sensitive text
C. Brighter screen
D. Smaller file size
Question 11

How does supervised learning differ from unsupervised learning?

A. Supervised learning needs no data
B. Unsupervised learning uses labelled data
C. Supervised learning uses labelled data, while unsupervised learning uses unlabelled data
D. They are exactly the same
Question 12

Why is supervised learning compared to learning with a teacher?

A. The correct answers are provided during training
B. The computer is never trained
C. No answers are ever given
D. Humans do all the work
Question 13

How is machine learning related to AI?

A. AI is a part of machine learning
B. Machine learning is one way of achieving AI
C. They are completely unrelated
D. Machine learning does not use data
Question 14

Why can AI tools like ChatGPT sometimes give incorrect information?

A. They always check every fact live
B. They never use data
C. They only copy from one book
D. They generate answers from patterns in their training data and can make mistakes
Question 15

Why can using ChatGPT to complete homework be an ethical problem?

A. It is academic dishonesty and reduces the student's own learning
B. It makes the computer slower
C. It damages the keyboard
D. It uses less electricity
Question 16

Why is privacy a concern when using voice assistants such as Google Assistant?

A. They cannot understand voice
B. They never connect to the internet
C. They may collect and store users' voice data
D. They only work offline
Question 17

Why is the misuse of AI voice tools like Lovo AI an ethical concern?

A. They cannot produce sound
B. Realistic AI voices can be used to deceive people without consent
C. They only work in silence
D. They delete users' files
Question 18

A bank trains a program with thousands of past loan records labelled 'repaid' or 'defaulted' to judge new applicants. This is:

A. Supervised learning
B. Unsupervised learning
C. Manual accounting
D. Data deletion
Question 19

A shop gives a computer customer purchase data with no labels and lets it group similar customers. This is:

A. Supervised learning
B. Data entry
C. Word processing
D. Unsupervised learning
Question 20

A student uses Grammarly to fix spelling in her own essay but writes all the ideas herself. Which statement is most appropriate?

A. It is plagiarism
B. It is hacking
C. It is acceptable because she still creates the ideas
D. It is illegal in all cases

🎯 How to get the most out of these questions

  • Attempt each question before revealing the answer.
  • Read the explanation even when you answered correctly — it reinforces the concept.
  • Note down any question you got wrong and revisit it the next day.
  • Use the pagination below the list to work through every page — do not stop at page 1.

📌 MCQs — FAQs

Are the answers in this section verified?

Yes — every answer on this page has been verified. MCQs also include explanations where available.

Can I print these questions?

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How often are questions updated?

New questions are added regularly. If a paper pattern changes, existing questions are reviewed and updated.

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