Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 487 · 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 is the odd one out? (a) a webcam (b) a hard disk (c) a speaker (d) a word processor
2. 2.💡 What is the smallest unit of computer memory? (a) byte (b) bit (c) KB (d) GB
3. 3.⌨️ In a word processor, what does Ctrl+V do? (a) paste (b) select all (c) undo (d) redo
4. 4.📄 A file name ends in .png. What is it most likely? (a) a sound (b) a video (c) a document (d) a picture
5. 5.True or false: to delete a file means to throw it away. (a) True (b) False
6. 6.💾 Which one holds apps that are open: RAM or storage? (a) storage (b) RAM
7. 7.🧾 Software is a set of ___ for the computer. (a) screws (b) buttons (c) instructions (d) wires
8. 8.🔍 Which is the odd one out? (a) a calculator app (b) a hard disk (c) a mouse (d) a monitor
9. 9.True or false: a speaker is hardware. (a) True (b) False
10. 10.💾 Which is smaller: 1 TB or 1 bit? (a) 1 TB (b) 1 bit
11. 11.Which file ending is a document? (a) .wav (b) .gif (c) .txt (d) .jpg
12. 12.🧩 Is a keyboard hardware or software? (a) hardware (b) software
13. 13.📁 Which word means to “change its name” (for a file or folder)? (a) delete (b) save (c) open (d) rename
14. 14.🔍 Which is the odd one out? (a) monitor (b) printer (c) keyboard (d) speaker
15. 15.True or false: to open a file means to throw it away. (a) False (b) True
16. 16.True or false: Ctrl+S is the shortcut to save. (a) True (b) False
17. 17.💾 How many KB are there in 1 MB?
18. 18.🧰 Is a memory card a storage, input or output device? (a) a storage device (b) an output device (c) an input device
19. 19.Which of these is hardware? (a) a mouse (b) an operating system (c) a word processor (d) a computer game
20. 20.💾 Which one keeps data when off: RAM or storage? (a) RAM (b) storage
21. 21.💾 Which is bigger: 1 KB or 1 bit? (a) 1 bit (b) 1 KB
22. 22.⌨️ In a word processor, what does Ctrl+P do? (a) print (b) select all (c) paste (d) redo
23. 23.Which shortcut do we press to undo? (a) Ctrl+Z (b) Ctrl+X (c) Ctrl+S (d) Ctrl+Y
24. 24.✋ Which can we touch: hardware or software? (a) hardware (b) software
25. 25.Which shortcut do we press to copy? (a) Ctrl+C (b) Ctrl+Y (c) Ctrl+V (d) Ctrl+Z
26. 26.💾 Which is smaller: 1 byte or 1 bit? (a) 1 bit (b) 1 byte
27. 27.True or false: a pen drive is an output device. (a) True (b) False
28. 28.What does it mean to open a file? (a) give it a new name (b) throw it away (c) see what is inside (d) get rid of it
29. 29.True or false: RAM is temporary memory. (a) False (b) True
30. 30.Which of these is software? (a) a speaker (b) a scanner (c) a mouse (d) an operating system
31. 31.What does it mean to create a file? (a) make an exact twin (b) see what is inside (c) give it a new name (d) make a brand-new one
32. 32.Which of these is hardware? (a) an operating system (b) a web browser (c) a calculator app (d) a keyboard
33. 33.💾 Which is bigger: 1 bit or 1 GB? (a) 1 bit (b) 1 GB
34. 34.🧰 Is a scanner a storage, input or output device? (a) an input device (b) an output device (c) a storage device
35. 35.💾 How many KB are there in 4 MB?
36. 36.💾 Which one loses data when off: RAM or storage? (a) storage (b) RAM
37. 37.Which of these is hardware? (a) a music player app (b) a monitor (c) a web browser (d) a calculator app
38. 38.🔍 Which is the odd one out? (a) a hard disk (b) a webcam (c) a scanner (d) a web browser
39. 39.True or false: storage (like a hard disk) is permanent storage. (a) False (b) True
40. 40.Which file ending is a sound? (a) .jpg (b) .mp4 (c) .avi (d) .mp3

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