Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 99 · 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 shortcut do we press to select all? (a) Ctrl+Z (b) Ctrl+A (c) Ctrl+C (d) Ctrl+S
2. 2.🧩 Is a music player app hardware or software? (a) software (b) hardware
3. 3.What does it mean to move a file? (a) keep your work for later (b) get rid of it (c) put it in another place (d) change its name
4. 4.🧰 Is a hard disk a storage, input or output device? (a) an input device (b) a storage device (c) an output device
5. 5.True or false: a webcam is hardware. (a) True (b) False
6. 6.💾 Which is smaller: 1 KB or 1 GB? (a) 1 GB (b) 1 KB
7. 7.What does it mean to save a file? (a) throw it away (b) store your work (c) give it a new name (d) make a brand-new one
8. 8.💾 Which one keeps your saved files: RAM or storage? (a) storage (b) RAM
9. 9.👩‍💻 What do we call people who write software? (a) farmers (b) programmers (c) plumbers (d) tailors
10. 10.😮 You deleted a word by mistake. What brings it back? (a) Cut (b) Save (c) Undo (d) Copy
11. 11.Which shortcut do we press to cut? (a) Ctrl+X (b) Ctrl+S (c) Ctrl+C (d) Ctrl+V
12. 12.True or false: to save a file means to put it in another place. (a) True (b) False
13. 13.📄 What does a word processor help us do? (a) cook food (b) water plants (c) fly a kite (d) type and edit text
14. 14.✋ Which can we touch: hardware or software? (a) software (b) hardware
15. 15.📄 A file name ends in .avi. What is it most likely? (a) a picture (b) a video (c) a document (d) a sound
16. 16.📷 A camera keeps its photos on a small ___. (a) keyboard (b) speaker (c) mouse pad (d) memory card
17. 17.💾 Which one is the working memory: RAM or storage? (a) storage (b) RAM
18. 18.🔌 The power goes off suddenly. Which loses the unsaved work? (a) the pen drive (b) the hard disk (c) RAM (d) the memory card
19. 19.⌨️ In a word processor, what does Ctrl+A do? (a) cut (b) copy (c) undo (d) select all
20. 20.True or false: Ctrl+C is the shortcut to copy. (a) False (b) True
21. 21.True or false: storage (like a hard disk) is the working memory. (a) False (b) True
22. 22.Which file ending is a sound? (a) .txt (b) .mp4 (c) .avi (d) .mp3
23. 23.True or false: to open a file means to make an exact twin. (a) True (b) False
24. 24.True or false: a mouse is software. (a) True (b) False
25. 25.Which file ending is a sound? (a) .jpg (b) .png (c) .wav (d) .mkv
26. 26.True or false: a speaker is an input device. (a) False (b) True
27. 27.💾 Which is smaller: 1 MB or 1 GB? (a) 1 GB (b) 1 MB
28. 28.💾 How many KB are there in 2 MB?
29. 29.True or false: Ctrl+P is the shortcut to save. (a) True (b) False
30. 30.🧩 Is a calculator app hardware or software? (a) hardware (b) software
31. 31.🔢 A bit can be only 0 or ___. (a) 9 (b) 2 (c) 5 (d) 1
32. 32.💾 Which one is permanent storage: RAM or storage? (a) RAM (b) storage
33. 33.Which shortcut do we press to undo? (a) Ctrl+Y (b) Ctrl+V (c) Ctrl+Z (d) Ctrl+S
34. 34.🔍 Which is the odd one out? (a) mouse (b) printer (c) microphone (d) keyboard
35. 35.🧰 Is a mouse a storage, input or output device? (a) a storage device (b) an input device (c) an output device
36. 36.Which of these is true of storage (like a hard disk)? (a) is the working memory (b) loses data when off (c) holds apps that are open (d) keeps your saved files
37. 37.True or false: Ctrl+V is the shortcut to undo. (a) True (b) False
38. 38.📁 Which word means to “store your work” (for a file or folder)? (a) delete (b) open (c) rename (d) save
39. 39.💾 How many bits are there in 10 bytes?
40. 40.💾 Which is bigger: 1 bit or 1 KB? (a) 1 KB (b) 1 bit

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