Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 161 · 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 paste? (a) Ctrl+X (b) Ctrl+S (c) Ctrl+V (d) Ctrl+Y
2. 2.📄 What does a word processor help us do? (a) water plants (b) cook food (c) fly a kite (d) type and edit text
3. 3.💡 What is the smallest unit of computer memory? (a) byte (b) GB (c) bit (d) KB
4. 4.Which of these is hardware? (a) a music player app (b) a printer (c) a word processor (d) a web browser
5. 5.True or false: a keyboard is an input device. (a) True (b) False
6. 6.Which of these is true of storage (like a hard disk)? (a) is temporary memory (b) holds apps that are open (c) loses data when off (d) keeps data when off
7. 7.Which shortcut do we press to undo? (a) Ctrl+X (b) Ctrl+Z (c) Ctrl+P (d) Ctrl+A
8. 8.💾 Which is bigger: 1 bit or 1 TB? (a) 1 bit (b) 1 TB
9. 9.What does it mean to open a file? (a) make an exact twin (b) make a brand-new one (c) see what is inside (d) change its name
10. 10.📁 Which word means to “make an exact twin” (for a file or folder)? (a) create (b) rename (c) open (d) copy
11. 11.Which of these is hardware? (a) an operating system (b) a calculator app (c) a music player app (d) a speaker
12. 12.Which shortcut do we press to select all? (a) Ctrl+V (b) Ctrl+Y (c) Ctrl+Z (d) Ctrl+A
13. 13.🔢 A bit can be only 0 or ___. (a) 1 (b) 9 (c) 5 (d) 2
14. 14.Which shortcut do we press to copy? (a) Ctrl+A (b) Ctrl+P (c) Ctrl+Z (d) Ctrl+C
15. 15.True or false: storage (like a hard disk) holds apps that are open. (a) True (b) False
16. 16.📂 What holds many files together, like a school bag holds books? (a) a folder (b) a speaker (c) a pixel (d) a mouse
17. 17.🧾 Software is a set of ___ for the computer. (a) instructions (b) buttons (c) wires (d) screws
18. 18.Which of these is an input device? (a) monitor (b) pen drive (c) memory card (d) mouse
19. 19.💾 How many KB are there in 4 MB?
20. 20.Which of these is an output device? (a) speaker (b) mouse (c) memory card (d) microphone
21. 21.🔍 Which is the odd one out? (a) printer (b) projector (c) monitor (d) hard disk
22. 22.True or false: Ctrl+V is the shortcut to paste. (a) False (b) True
23. 23.True or false: to move a file means to keep your work for later. (a) True (b) False
24. 24.💾 How many MB are there in 3 GB?
25. 25.📄 A file name ends in .mp3. What is it most likely? (a) a picture (b) a sound (c) a document (d) a video
26. 26.🔍 Which is the odd one out? (a) a word processor (b) an operating system (c) a web browser (d) a speaker
27. 27.True or false: to move a file means to get rid of it. (a) False (b) True
28. 28.💾 How many bits are there in 10 bytes?
29. 29.🧩 Is a speaker hardware or software? (a) hardware (b) software
30. 30.Which file ending is a picture? (a) .png (b) .wav (c) .mkv (d) .mp3
31. 31.🧩 Is a keyboard hardware or software? (a) hardware (b) software
32. 32.💾 How many bytes are there in 4 KB?
33. 33.📄 A file name ends in .pdf. What is it most likely? (a) a document (b) a video (c) a picture (d) a sound
34. 34.💾 How many bytes are there in 2 KB?
35. 35.⌨️ In a word processor, what does Ctrl+Z do? (a) copy (b) undo (c) paste (d) redo
36. 36.True or false: a hard disk is hardware. (a) False (b) True
37. 37.💾 Which is bigger: 1 TB or 1 MB? (a) 1 TB (b) 1 MB
38. 38.📁 Which word means to “see what is inside” (for a file or folder)? (a) open (b) create (c) move (d) copy
39. 39.🔍 Which shortcut helps you find a word in a long story? (a) Ctrl+U (b) Ctrl+B (c) Ctrl+I (d) Ctrl+F
40. 40.🧩 Is a computer game hardware or software? (a) software (b) hardware

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