Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 600 · 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 4 KB?
2. 2.🔢 A bit can be only 0 or ___. (a) 9 (b) 2 (c) 1 (d) 5
3. 3.True or false: Ctrl+P is the shortcut to undo. (a) False (b) True
4. 4.💾 Which one is temporary memory: RAM or storage? (a) storage (b) RAM
5. 5.🔍 Which is the odd one out? (a) a keyboard (b) an operating system (c) a computer game (d) a web browser
6. 6.📄 A file name ends in .mp3. What is it most likely? (a) a sound (b) a picture (c) a document (d) a video
7. 7.🔍 Which is the odd one out? (a) a scanner (b) a word processor (c) a mouse (d) a webcam
8. 8.Which of these is true of storage (like a hard disk)? (a) is the working memory (b) loses data when off (c) keeps photos for years (d) holds apps that are open
9. 9.True or false: Ctrl+C is the shortcut to print. (a) False (b) True
10. 10.Which of these is software? (a) a monitor (b) a keyboard (c) a pen drive (d) a web browser
11. 11.Which of these is a storage device? (a) hard disk (b) keyboard (c) printer (d) microphone
12. 12.💾 Which is smaller: 1 byte or 1 MB? (a) 1 byte (b) 1 MB
13. 13.💾 Which is smaller: 1 GB or 1 KB? (a) 1 KB (b) 1 GB
14. 14.✋ Which can we touch: hardware or software? (a) hardware (b) software
15. 15.True or false: a mouse is software. (a) True (b) False
16. 16.Which of these is hardware? (a) a paint program (b) a typing tutor (c) a word processor (d) a scanner
17. 17.Which file ending is a video? (a) .mp3 (b) .pdf (c) .mp4 (d) .gif
18. 18.True or false: a scanner is hardware. (a) False (b) True
19. 19.📁 Which word means to “change its name” (for a file or folder)? (a) create (b) delete (c) save (d) rename
20. 20.💾 Which is bigger: 1 GB or 1 bit? (a) 1 bit (b) 1 GB
21. 21.Which shortcut do we press to select all? (a) Ctrl+Y (b) Ctrl+P (c) Ctrl+Z (d) Ctrl+A
22. 22.Which shortcut do we press to print? (a) Ctrl+P (b) Ctrl+S (c) Ctrl+A (d) Ctrl+X
23. 23.💾 How many bits are there in 11 bytes?
24. 24.True or false: Ctrl+Y is the shortcut to copy. (a) False (b) True
25. 25.Which shortcut do we press to paste? (a) Ctrl+S (b) Ctrl+P (c) Ctrl+V (d) Ctrl+C
26. 26.🧰 Is a microphone a storage, input or output device? (a) an output device (b) an input device (c) a storage device
27. 27.💾 Which one holds apps that are open: RAM or storage? (a) storage (b) RAM
28. 28.True or false: a keyboard is hardware. (a) False (b) True
29. 29.Which of these is software? (a) a webcam (b) a mouse (c) a calculator app (d) a printer
30. 30.😮 You deleted a word by mistake. What brings it back? (a) Copy (b) Save (c) Undo (d) Cut
31. 31.🧾 Software is a set of ___ for the computer. (a) instructions (b) buttons (c) wires (d) screws
32. 32.📁 What do we call a folder inside another folder? (a) a subfolder (b) a big file (c) an icon (d) a printer
33. 33.💾 How many GB are there in 2 TB?
34. 34.📄 A file name ends in .txt. What is it most likely? (a) a sound (b) a document (c) a video (d) a picture
35. 35.💾 Which is smaller: 1 byte or 1 bit? (a) 1 bit (b) 1 byte
36. 36.True or false: to create a file means to throw it away. (a) False (b) True
37. 37.💡 What is the smallest unit of computer memory? (a) GB (b) KB (c) bit (d) byte
38. 38.⌨️ In a word processor, what does Ctrl+C do? (a) copy (b) print (c) select all (d) redo
39. 39.True or false: RAM loses data when off. (a) True (b) False
40. 40.True or false: Ctrl+A is the shortcut to save. (a) True (b) False

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