Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 588 · 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.True or false: storage (like a hard disk) is the working memory. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) a paint program (b) a web browser (c) a computer game (d) a speaker
3. 3.🧩 Is a music player app hardware or software? (a) hardware (b) software
4. 4.⌨️ In a word processor, what does Ctrl+C do? (a) save (b) copy (c) redo (d) undo
5. 5.True or false: Ctrl+X is the shortcut to cut. (a) True (b) False
6. 6.💾 Which one keeps your saved files: RAM or storage? (a) RAM (b) storage
7. 7.↩️ You pressed Undo by mistake. Which command puts the change back? (a) Copy (b) Redo (c) Cut (d) Delete
8. 8.True or false: a scanner is an output device. (a) True (b) False
9. 9.Which file ending is a picture? (a) .mp4 (b) .jpg (c) .mp3 (d) .wav
10. 10.🧰 Is a pen drive a storage, input or output device? (a) a storage device (b) an output device (c) an input device
11. 11.🧾 Software is a set of ___ for the computer. (a) instructions (b) wires (c) screws (d) buttons
12. 12.Which shortcut do we press to redo? (a) Ctrl+C (b) Ctrl+S (c) Ctrl+Y (d) Ctrl+A
13. 13.💾 How many bits are there in 10 bytes?
14. 14.True or false: a paint program is hardware. (a) True (b) False
15. 15.💾 How many bytes are there in 4 KB?
16. 16.Which of these is a storage device? (a) scanner (b) hard disk (c) keyboard (d) projector
17. 17.💾 Which one keeps photos for years: RAM or storage? (a) storage (b) RAM
18. 18.Which of these is hardware? (a) a calculator app (b) a speaker (c) a word processor (d) a music player app
19. 19.Which of these is software? (a) a monitor (b) a speaker (c) a hard disk (d) a word processor
20. 20.What does it mean to rename a file? (a) throw it away (b) make an exact twin (c) give it a new name (d) put it in another place
21. 21.Which of these is hardware? (a) an operating system (b) a web browser (c) a music player app (d) a hard disk
22. 22.⌨️ In a word processor, what does Ctrl+V do? (a) save (b) copy (c) redo (d) paste
23. 23.🧩 Is a monitor hardware or software? (a) hardware (b) software
24. 24.🔍 Which is the odd one out? (a) an operating system (b) a calculator app (c) a paint program (d) a printer
25. 25.👩‍💻 What do we call people who write software? (a) plumbers (b) farmers (c) tailors (d) programmers
26. 26.💾 Which is smaller: 1 byte or 1 GB? (a) 1 GB (b) 1 byte
27. 27.Which of these is hardware? (a) a music player app (b) a paint program (c) a web browser (d) a keyboard
28. 28.True or false: a pen drive is software. (a) False (b) True
29. 29.📋 You want the same sentence in two places. What do you use first? (a) Copy (b) Delete (c) Undo (d) Backspace
30. 30.📁 What do we call a folder inside another folder? (a) an icon (b) a big file (c) a printer (d) a subfolder
31. 31.💾 How many bits are there in 6 bytes?
32. 32.⌨️ In a word processor, what does Ctrl+Y do? (a) copy (b) undo (c) redo (d) select all
33. 33.🔌 The power goes off suddenly. Which loses the unsaved work? (a) the memory card (b) the hard disk (c) RAM (d) the pen drive
34. 34.💾 Which is smaller: 1 KB or 1 TB? (a) 1 TB (b) 1 KB
35. 35.True or false: Ctrl+Z is the shortcut to redo. (a) True (b) False
36. 36.🔢 A bit can be only 0 or ___. (a) 1 (b) 9 (c) 2 (d) 5
37. 37.💾 Which is smaller: 1 TB or 1 byte? (a) 1 TB (b) 1 byte
38. 38.What does it mean to rename a file? (a) keep your work for later (b) make an exact twin (c) throw it away (d) change its name
39. 39.True or false: a memory card is an input device. (a) True (b) False
40. 40.💾 Which is bigger: 1 TB or 1 KB? (a) 1 KB (b) 1 TB

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