Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 645 · 40 questions

Remember (Find the topic, use the idea): Read the question and find its topic: hardware or software, units, memory, files, or editing text. Use that lesson’s idea — can you touch it, multiply to change units, RAM forgets, which file action, which shortcut. For unit sums, write the rule first (1 byte = 8 bits, 1 KB = 1024 bytes) and then multiply.

1. 1.💾 How many bytes are there in 1 KB?
2. 2.💾 Which is smaller: 1 bit or 1 byte? (a) 1 byte (b) 1 bit
3. 3.🔢 A bit can be only 0 or ___. (a) 9 (b) 2 (c) 1 (d) 5
4. 4.🧩 Is a hard disk hardware or software? (a) hardware (b) software
5. 5.Which of these is a storage device? (a) scanner (b) projector (c) solid-state drive (d) speaker
6. 6.🔍 Which is the odd one out? (a) a word processor (b) a speaker (c) a pen drive (d) a hard disk
7. 7.📁 Which word means to “give it a new name” (for a file or folder)? (a) rename (b) open (c) delete (d) move
8. 8.💾 Which one is temporary memory: RAM or storage? (a) storage (b) RAM
9. 9.True or false: Ctrl+X is the shortcut to save. (a) True (b) False
10. 10.🧩 Is a typing tutor hardware or software? (a) hardware (b) software
11. 11.Which file ending is a document? (a) .pdf (b) .jpg (c) .mp4 (d) .wav
12. 12.💾 Which is bigger: 1 bit or 1 KB? (a) 1 KB (b) 1 bit
13. 13.💾 Which is bigger: 1 GB or 1 byte? (a) 1 byte (b) 1 GB
14. 14.😮 You deleted a word by mistake. What brings it back? (a) Cut (b) Undo (c) Save (d) Copy
15. 15.True or false: to open a file means to see what is inside. (a) True (b) False
16. 16.👩‍💻 What do we call people who write software? (a) tailors (b) plumbers (c) programmers (d) farmers
17. 17.↩️ You pressed Undo by mistake. Which command puts the change back? (a) Redo (b) Delete (c) Copy (d) Cut
18. 18.💾 Which is smaller: 1 GB or 1 KB? (a) 1 GB (b) 1 KB
19. 19.Which file ending is a picture? (a) .pdf (b) .txt (c) .gif (d) .mp3
20. 20.💾 Which is bigger: 1 MB or 1 TB? (a) 1 MB (b) 1 TB
21. 21.📁 Which word means to “keep your work for later” (for a file or folder)? (a) save (b) rename (c) create (d) open
22. 22.📁 Which word means to “see what is inside” (for a file or folder)? (a) move (b) copy (c) open (d) create
23. 23.Which of these is hardware? (a) a music player app (b) an operating system (c) a mouse (d) a calculator app
24. 24.💡 What is the smallest unit of computer memory? (a) KB (b) byte (c) GB (d) bit
25. 25.True or false: Ctrl+V is the shortcut to undo. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a calculator app (b) a music player app (c) a computer game (d) a printer
27. 27.True or false: a monitor is hardware. (a) True (b) False
28. 28.Which of these is true of RAM? (a) keeps photos for years (b) is permanent storage (c) keeps data when off (d) is the working memory
29. 29.🧾 Software is a set of ___ for the computer. (a) wires (b) buttons (c) screws (d) instructions
30. 30.📋 You want the same sentence in two places. What do you use first? (a) Undo (b) Backspace (c) Delete (d) Copy
31. 31.💾 Which is smaller: 1 byte or 1 KB? (a) 1 byte (b) 1 KB
32. 32.Which of these is software? (a) a keyboard (b) a monitor (c) a printer (d) a web browser
33. 33.True or false: to delete a file means to throw it away. (a) False (b) True
34. 34.Which of these is true of RAM? (a) is permanent storage (b) holds apps that are open (c) keeps photos for years (d) keeps data when off
35. 35.True or false: a mouse is hardware. (a) True (b) False
36. 36.Which of these is software? (a) a music player app (b) a printer (c) a webcam (d) a keyboard
37. 37.Which file ending is a video? (a) .mkv (b) .jpg (c) .gif (d) .txt
38. 38.📄 What does a word processor help us do? (a) cook food (b) type and edit text (c) water plants (d) fly a kite
39. 39.💾 Which is smaller: 1 KB or 1 bit? (a) 1 bit (b) 1 KB
40. 40.Which shortcut do we press to select all? (a) Ctrl+V (b) Ctrl+S (c) Ctrl+X (d) Ctrl+A

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