Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 141 · 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.📁 Which word means to “throw it away” (for a file or folder)? (a) save (b) create (c) delete (d) rename
2. 2.💾 How many bytes are there in 4 KB?
3. 3.📄 A file name ends in .avi. What is it most likely? (a) a picture (b) a document (c) a video (d) a sound
4. 4.🧩 Is a music player app hardware or software? (a) hardware (b) software
5. 5.🔢 A bit can be only 0 or ___. (a) 2 (b) 5 (c) 9 (d) 1
6. 6.True or false: storage (like a hard disk) is the working memory. (a) True (b) False
7. 7.What does it mean to move a file? (a) get rid of it (b) throw it away (c) give it a new name (d) put it in another place
8. 8.Which shortcut do we press to redo? (a) Ctrl+C (b) Ctrl+S (c) Ctrl+Y (d) Ctrl+P
9. 9.💾 Which is smaller: 1 byte or 1 bit? (a) 1 byte (b) 1 bit
10. 10.True or false: Ctrl+Z is the shortcut to print. (a) False (b) True
11. 11.True or false: a speaker is an output device. (a) False (b) True
12. 12.💾 Which one keeps data when off: RAM or storage? (a) RAM (b) storage
13. 13.🧰 Is a printer a storage, input or output device? (a) an input device (b) a storage device (c) an output device
14. 14.✋ Which can we touch: hardware or software? (a) hardware (b) software
15. 15.⌨️ In a word processor, what does Ctrl+V do? (a) copy (b) redo (c) paste (d) undo
16. 16.Which of these is an output device? (a) solid-state drive (b) hard disk (c) keyboard (d) monitor
17. 17.True or false: a scanner is a storage device. (a) False (b) True
18. 18.True or false: a mouse is an output device. (a) True (b) False
19. 19.💡 What is the smallest unit of computer memory? (a) bit (b) KB (c) GB (d) byte
20. 20.📄 What does a word processor help us do? (a) water plants (b) cook food (c) fly a kite (d) type and edit text
21. 21.💾 Which one is the working memory: RAM or storage? (a) storage (b) RAM
22. 22.💾 Which is bigger: 1 KB or 1 bit? (a) 1 bit (b) 1 KB
23. 23.⌨️ In a word processor, what does Ctrl+A do? (a) save (b) copy (c) paste (d) select all
24. 24.🔍 Which is the odd one out? (a) a pen drive (b) a computer game (c) a monitor (d) a keyboard
25. 25.True or false: Ctrl+Y is the shortcut to select all. (a) False (b) True
26. 26.True or false: a mouse is hardware. (a) True (b) False
27. 27.🧩 Is a paint program hardware or software? (a) hardware (b) software
28. 28.Which shortcut do we press to paste? (a) Ctrl+V (b) Ctrl+A (c) Ctrl+Z (d) Ctrl+P
29. 29.Which file ending is a video? (a) .txt (b) .mkv (c) .png (d) .wav
30. 30.True or false: a projector is an output device. (a) False (b) True
31. 31.💾 Which is smaller: 1 byte or 1 TB? (a) 1 TB (b) 1 byte
32. 32.True or false: to move a file means to put it in another place. (a) False (b) True
33. 33.📋 You want the same sentence in two places. What do you use first? (a) Delete (b) Backspace (c) Undo (d) Copy
34. 34.True or false: to create a file means to keep your work for later. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a scanner (b) an operating system (c) a pen drive (d) a mouse
36. 36.Which of these is software? (a) a word processor (b) a scanner (c) a hard disk (d) a pen drive
37. 37.True or false: storage (like a hard disk) holds apps that are open. (a) True (b) False
38. 38.True or false: to delete a file means to make an exact twin. (a) False (b) True
39. 39.Which of these is true of RAM? (a) loses data when off (b) keeps photos for years (c) keeps your saved files (d) keeps data when off
40. 40.💾 How many KB are there in 4 MB?

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