Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 98 · 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 of these is an output device? (a) pen drive (b) projector (c) scanner (d) mouse
2. 2.🧾 Software is a set of ___ for the computer. (a) buttons (b) screws (c) wires (d) instructions
3. 3.📋 You want the same sentence in two places. What do you use first? (a) Copy (b) Delete (c) Undo (d) Backspace
4. 4.↩️ You pressed Undo by mistake. Which command puts the change back? (a) Delete (b) Redo (c) Cut (d) Copy
5. 5.Which file ending is a sound? (a) .mkv (b) .mp3 (c) .pdf (d) .avi
6. 6.Which of these is true of storage (like a hard disk)? (a) is permanent storage (b) loses data when off (c) is the working memory (d) holds apps that are open
7. 7.🧰 Is a speaker a storage, input or output device? (a) an input device (b) an output device (c) a storage device
8. 8.True or false: to rename a file means to give it a new name. (a) False (b) True
9. 9.🔌 The power goes off suddenly. Which loses the unsaved work? (a) the pen drive (b) the memory card (c) the hard disk (d) RAM
10. 10.🔍 Which is the odd one out? (a) memory card (b) printer (c) solid-state drive (d) pen drive
11. 11.🔍 Which shortcut helps you find a word in a long story? (a) Ctrl+B (b) Ctrl+I (c) Ctrl+U (d) Ctrl+F
12. 12.Which file ending is a document? (a) .gif (b) .wav (c) .pdf (d) .mp4
13. 13.⌨️ In a word processor, what does Ctrl+X do? (a) cut (b) print (c) copy (d) paste
14. 14.🔍 Which is the odd one out? (a) a pen drive (b) a printer (c) a speaker (d) a paint program
15. 15.True or false: to delete a file means to change its name. (a) True (b) False
16. 16.True or false: Ctrl+X is the shortcut to save. (a) False (b) True
17. 17.💾 How many bytes are there in 3 KB?
18. 18.🧩 Is a pen drive hardware or software? (a) hardware (b) software
19. 19.💾 How many bytes are there in 2 KB?
20. 20.💾 Which one is the working memory: RAM or storage? (a) storage (b) RAM
21. 21.True or false: a printer is an output device. (a) False (b) True
22. 22.🧩 Is a paint program hardware or software? (a) hardware (b) software
23. 23.⌨️ In a word processor, what does Ctrl+A do? (a) print (b) undo (c) select all (d) cut
24. 24.Which shortcut do we press to cut? (a) Ctrl+Z (b) Ctrl+P (c) Ctrl+S (d) Ctrl+X
25. 25.Which shortcut do we press to redo? (a) Ctrl+Y (b) Ctrl+Z (c) Ctrl+P (d) Ctrl+C
26. 26.📁 Which word means to “put it in another place” (for a file or folder)? (a) move (b) save (c) delete (d) copy
27. 27.🧰 Is a memory card a storage, input or output device? (a) a storage device (b) an input device (c) an output device
28. 28.True or false: Ctrl+Y is the shortcut to select all. (a) True (b) False
29. 29.💾 Which one holds apps that are open: RAM or storage? (a) storage (b) RAM
30. 30.True or false: a webcam is software. (a) True (b) False
31. 31.What does it mean to rename a file? (a) make an exact twin (b) put it in another place (c) keep your work for later (d) change its name
32. 32.Which of these is hardware? (a) a music player app (b) a webcam (c) an operating system (d) a paint program
33. 33.Which of these is an input device? (a) speaker (b) keyboard (c) projector (d) monitor
34. 34.💡 What is the smallest unit of computer memory? (a) byte (b) bit (c) GB (d) KB
35. 35.What does it mean to move a file? (a) make a brand-new one (b) make an exact twin (c) change its name (d) put it in another place
36. 36.💾 Which is bigger: 1 MB or 1 GB? (a) 1 GB (b) 1 MB
37. 37.👩‍💻 What do we call people who write software? (a) tailors (b) programmers (c) plumbers (d) farmers
38. 38.📁 Which word means to “store your work” (for a file or folder)? (a) save (b) open (c) move (d) copy
39. 39.Which of these is hardware? (a) an operating system (b) a web browser (c) a scanner (d) a calculator app
40. 40.True or false: a calculator app is hardware. (a) True (b) False

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