Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 580 · 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 file ending is a video? (a) .txt (b) .mp3 (c) .jpg (d) .mkv
2. 2.⌨️ In a word processor, what does Ctrl+V do? (a) select all (b) paste (c) undo (d) redo
3. 3.💾 Which is bigger: 1 KB or 1 GB? (a) 1 KB (b) 1 GB
4. 4.📄 A file name ends in .pdf. What is it most likely? (a) a sound (b) a video (c) a document (d) a picture
5. 5.True or false: Ctrl+S is the shortcut to save. (a) False (b) True
6. 6.📷 A camera keeps its photos on a small ___. (a) speaker (b) mouse pad (c) memory card (d) keyboard
7. 7.💾 Which is bigger: 1 byte or 1 KB? (a) 1 KB (b) 1 byte
8. 8.🔍 Which is the odd one out? (a) a pen drive (b) a music player app (c) a hard disk (d) a printer
9. 9.Which of these is true of storage (like a hard disk)? (a) holds apps that are open (b) is permanent storage (c) is temporary memory (d) loses data when off
10. 10.Which file ending is a sound? (a) .avi (b) .mkv (c) .wav (d) .pdf
11. 11.True or false: RAM keeps your saved files. (a) False (b) True
12. 12.Which of these is software? (a) a hard disk (b) a music player app (c) a keyboard (d) a scanner
13. 13.True or false: Ctrl+Z is the shortcut to undo. (a) True (b) False
14. 14.🖍️ Before we cut or copy text, we must first ___ it. (a) save (b) select (c) print (d) delete
15. 15.💾 Which is smaller: 1 byte or 1 MB? (a) 1 byte (b) 1 MB
16. 16.💡 What is the smallest unit of computer memory? (a) KB (b) bit (c) GB (d) byte
17. 17.💾 Which is smaller: 1 KB or 1 bit? (a) 1 KB (b) 1 bit
18. 18.Which of these is hardware? (a) an operating system (b) a scanner (c) a web browser (d) a paint program
19. 19.Which of these is an input device? (a) projector (b) pen drive (c) keyboard (d) solid-state drive
20. 20.Which shortcut do we press to cut? (a) Ctrl+X (b) Ctrl+Y (c) Ctrl+V (d) Ctrl+C
21. 21.🔍 Which is the odd one out? (a) mouse (b) keyboard (c) monitor (d) microphone
22. 22.Which shortcut do we press to print? (a) Ctrl+V (b) Ctrl+Y (c) Ctrl+S (d) Ctrl+P
23. 23.⌨️ In a word processor, what does Ctrl+A do? (a) paste (b) save (c) select all (d) undo
24. 24.Which shortcut do we press to copy? (a) Ctrl+Z (b) Ctrl+X (c) Ctrl+A (d) Ctrl+C
25. 25.Which shortcut do we press to select all? (a) Ctrl+A (b) Ctrl+X (c) Ctrl+S (d) Ctrl+P
26. 26.⚡ Which is faster for the computer to work with? (a) a pen drive (b) a memory card (c) RAM (d) a printer
27. 27.🔢 A bit can be only 0 or ___. (a) 5 (b) 9 (c) 2 (d) 1
28. 28.True or false: Ctrl+X is the shortcut to cut. (a) True (b) False
29. 29.⌨️ In a word processor, what does Ctrl+Y do? (a) redo (b) cut (c) print (d) select all
30. 30.True or false: RAM is temporary memory. (a) True (b) False
31. 31.⌨️ In a word processor, what does Ctrl+Z do? (a) select all (b) paste (c) redo (d) undo
32. 32.📄 What does a word processor help us do? (a) cook food (b) water plants (c) type and edit text (d) fly a kite
33. 33.⌨️ In a word processor, what does Ctrl+P do? (a) paste (b) select all (c) print (d) copy
34. 34.🧰 Is a keyboard a storage, input or output device? (a) an input device (b) an output device (c) a storage device
35. 35.✋ Which can we touch: hardware or software? (a) software (b) hardware
36. 36.True or false: storage (like a hard disk) keeps data when off. (a) True (b) False
37. 37.💾 How many MB are there in 2 GB?
38. 38.💾 Which is bigger: 1 bit or 1 GB? (a) 1 GB (b) 1 bit
39. 39.🧩 Is an operating system hardware or software? (a) software (b) hardware
40. 40.🔍 Which is the odd one out? (a) projector (b) speaker (c) monitor (d) scanner

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