Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 172 · 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.⌨️ In a word processor, what does Ctrl+A do? (a) print (b) copy (c) select all (d) save
2. 2.Which file ending is a document? (a) .mp3 (b) .mkv (c) .pdf (d) .gif
3. 3.Which of these is software? (a) an operating system (b) a keyboard (c) a mouse (d) a pen drive
4. 4.🧩 Is a webcam hardware or software? (a) software (b) hardware
5. 5.💾 Which one keeps your saved files: RAM or storage? (a) RAM (b) storage
6. 6.💡 What is the smallest unit of computer memory? (a) byte (b) GB (c) KB (d) bit
7. 7.💾 Which one keeps data when off: RAM or storage? (a) RAM (b) storage
8. 8.True or false: Ctrl+C is the shortcut to undo. (a) True (b) False
9. 9.True or false: to save a file means to keep your work for later. (a) False (b) True
10. 10.True or false: a mouse is hardware. (a) True (b) False
11. 11.Which of these is software? (a) a hard disk (b) a mouse (c) a printer (d) a computer game
12. 12.💾 Which is smaller: 1 byte or 1 GB? (a) 1 GB (b) 1 byte
13. 13.Which of these is an input device? (a) memory card (b) printer (c) solid-state drive (d) scanner
14. 14.Which shortcut do we press to undo? (a) Ctrl+V (b) Ctrl+P (c) Ctrl+C (d) Ctrl+Z
15. 15.Which file ending is a picture? (a) .png (b) .avi (c) .pdf (d) .mp4
16. 16.Which of these is true of RAM? (a) keeps your saved files (b) keeps data when off (c) keeps photos for years (d) is temporary memory
17. 17.💾 Which is smaller: 1 byte or 1 bit? (a) 1 byte (b) 1 bit
18. 18.True or false: a typing tutor is hardware. (a) False (b) True
19. 19.Which of these is true of RAM? (a) holds apps that are open (b) keeps data when off (c) keeps photos for years (d) keeps your saved files
20. 20.True or false: Ctrl+V is the shortcut to save. (a) False (b) True
21. 21.What does it mean to delete a file? (a) give it a new name (b) get rid of it (c) make an exact twin (d) make a brand-new one
22. 22.True or false: storage (like a hard disk) is permanent storage. (a) False (b) True
23. 23.True or false: Ctrl+Z is the shortcut to undo. (a) True (b) False
24. 24.💾 How many bits are there in 7 bytes?
25. 25.Which of these is an output device? (a) mouse (b) projector (c) keyboard (d) microphone
26. 26.📁 Which word means to “throw it away” (for a file or folder)? (a) open (b) move (c) delete (d) copy
27. 27.⌨️ In a word processor, what does Ctrl+Y do? (a) select all (b) paste (c) print (d) redo
28. 28.📄 A file name ends in .avi. What is it most likely? (a) a sound (b) a video (c) a picture (d) a document
29. 29.Which of these is a storage device? (a) solid-state drive (b) keyboard (c) scanner (d) microphone
30. 30.What does it mean to delete a file? (a) make an exact twin (b) give it a new name (c) throw it away (d) put it in another place
31. 31.🔢 A bit can be only 0 or ___. (a) 2 (b) 1 (c) 9 (d) 5
32. 32.True or false: Ctrl+P is the shortcut to copy. (a) True (b) False
33. 33.🧩 Is a mouse hardware or software? (a) hardware (b) software
34. 34.Which of these is hardware? (a) a typing tutor (b) a word processor (c) a music player app (d) a pen drive
35. 35.🔍 Which is the odd one out? (a) a typing tutor (b) a speaker (c) a calculator app (d) a music player app
36. 36.💾 How many bits are there in 12 bytes?
37. 37.True or false: a microphone is an input device. (a) True (b) False
38. 38.▌ What is the blinking line that shows where you will type? (a) the folder (b) the icon (c) the toolbar (d) the cursor
39. 39.💾 Which is bigger: 1 KB or 1 bit? (a) 1 KB (b) 1 bit
40. 40.💾 Which is smaller: 1 TB or 1 KB? (a) 1 TB (b) 1 KB

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