Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 320 · 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 undo? (a) Ctrl+C (b) Ctrl+V (c) Ctrl+A (d) Ctrl+Z
2. 2.Which of these is a storage device? (a) mouse (b) monitor (c) scanner (d) pen drive
3. 3.Which of these is an input device? (a) monitor (b) hard disk (c) pen drive (d) keyboard
4. 4.Which shortcut do we press to paste? (a) Ctrl+C (b) Ctrl+S (c) Ctrl+V (d) Ctrl+X
5. 5.📄 A file name ends in .txt. What is it most likely? (a) a video (b) a picture (c) a sound (d) a document
6. 6.🔌 The power goes off suddenly. Which loses the unsaved work? (a) the memory card (b) the pen drive (c) RAM (d) the hard disk
7. 7.Which file ending is a sound? (a) .gif (b) .pdf (c) .png (d) .wav
8. 8.⌨️ In a word processor, what does Ctrl+V do? (a) undo (b) paste (c) copy (d) print
9. 9.Which shortcut do we press to select all? (a) Ctrl+V (b) Ctrl+C (c) Ctrl+A (d) Ctrl+Z
10. 10.Which file ending is a picture? (a) .mp4 (b) .wav (c) .png (d) .pdf
11. 11.Which of these is true of storage (like a hard disk)? (a) holds apps that are open (b) is temporary memory (c) loses data when off (d) is permanent storage
12. 12.💾 Which is bigger: 1 TB or 1 MB? (a) 1 TB (b) 1 MB
13. 13.💾 Which is bigger: 1 byte or 1 bit? (a) 1 byte (b) 1 bit
14. 14.💾 How many bits are there in 12 bytes?
15. 15.✂️ You want to move a sentence to the end. What do you use first? (a) Print (b) Delete (c) Cut (d) Undo
16. 16.Which shortcut do we press to cut? (a) Ctrl+V (b) Ctrl+X (c) Ctrl+S (d) Ctrl+Z
17. 17.Which file ending is a document? (a) .png (b) .pdf (c) .mp4 (d) .jpg
18. 18.Which of these is hardware? (a) a calculator app (b) a paint program (c) a computer game (d) a keyboard
19. 19.📷 A camera keeps its photos on a small ___. (a) mouse pad (b) speaker (c) memory card (d) keyboard
20. 20.True or false: to delete a file means to keep your work for later. (a) True (b) False
21. 21.💾 How many KB are there in 3 MB?
22. 22.📂 What holds many files together, like a school bag holds books? (a) a mouse (b) a pixel (c) a speaker (d) a folder
23. 23.⌨️ In a word processor, what does Ctrl+C do? (a) copy (b) undo (c) select all (d) print
24. 24.💾 Which is smaller: 1 MB or 1 byte? (a) 1 MB (b) 1 byte
25. 25.📁 Which word means to “make a brand-new one” (for a file or folder)? (a) delete (b) create (c) open (d) move
26. 26.💾 Which is smaller: 1 KB or 1 bit? (a) 1 KB (b) 1 bit
27. 27.True or false: a microphone is an input device. (a) True (b) False
28. 28.✋ Which can we touch: hardware or software? (a) software (b) hardware
29. 29.🧩 Is a mouse hardware or software? (a) software (b) hardware
30. 30.True or false: a keyboard is software. (a) False (b) True
31. 31.True or false: Ctrl+X is the shortcut to paste. (a) False (b) True
32. 32.True or false: Ctrl+Y is the shortcut to redo. (a) True (b) False
33. 33.Which of these is an output device? (a) pen drive (b) speaker (c) microphone (d) hard disk
34. 34.🔢 A bit can be only 0 or ___. (a) 2 (b) 5 (c) 9 (d) 1
35. 35.True or false: an operating system is hardware. (a) False (b) True
36. 36.Which of these is hardware? (a) a scanner (b) a calculator app (c) a word processor (d) a typing tutor
37. 37.True or false: a memory card is an output device. (a) True (b) False
38. 38.🧰 Is a projector a storage, input or output device? (a) a storage device (b) an output device (c) an input device
39. 39.💾 Which is bigger: 1 MB or 1 KB? (a) 1 KB (b) 1 MB
40. 40.💾 How many GB are there in 2 TB?

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