App Dev Worksheet: Final Test

App development lesson 24: App development final test · Set 931 · 40 questions

Developer's tip (Plan, design, build, check): Find the topic: what apps are, designing apps, or logic and building. Read every screen, list or code line carefully, top to bottom. For code, write each value down step by step and check it again.

1. 1.📱 Which one opens in a web browser: an app or a website? (a) a website (b) an app
2. 2.🔢 After an app is released, what comes right after “list what to fix”? (a) release an update (b) test it again (c) fix and improve (d) read user reviews
3. 3.📊 Survey: which problem bugs you most? Which problem should your app solve first?
   wasting pocket money: 12 votes
   forgetting homework: 9 votes
   losing water bottles: 5 votes (a) wasting pocket money (b) forgetting homework (c) losing water bottles
4. 4.💡 Does an app idea like a page of random dots solve a real problem? (a) No (b) Yes
5. 5.True or false: a website opens in a web browser. (a) False (b) True
6. 6.💾 What number does this code show?
   let notes = ["Music", "Maths", "Hindi", "Art"];
   notes.push("Science");
   notes.push("Sports");
   show(notes.length);
7. 7.⚙️ In an app, is adding up a bill an input, processing or an output? (a) output (b) input (c) processing
8. 8.💾 What is a variable? (a) a picture (b) a named box for a value (c) a type of screen (d) a phone setting
9. 9.👥 A library app has 250 readers, 260 librarians and 90 volunteers as users. How many users does it have in all?
10. 10.🔍 Which is the odd one out? (a) captions on videos (b) tiny tap areas (c) fast-flashing lights (d) sudden loud sounds
11. 11.Which of these is about UI (the look)? (a) whether users get lost (b) how easy sign-up is (c) how many taps it takes (d) the button colours
12. 12.🌗 Is black on yellow easy or hard to read on a button? (a) hard to read (b) easy to read
13. 13.Which of these is about UI (the look)? (a) how easy sign-up is (b) how many taps it takes (c) the screen layout (d) how fast a task is done
14. 14.🧩 In an app, what is the log-in page? (a) a screen (b) a button (c) data (d) an input
15. 15.💾 Where should the app save notes to read offline: on the phone or in the cloud? (a) in the cloud (b) on the phone
16. 16.Which colour pair is hard to read? (a) white on black (b) dark blue on black (c) black on pale grey (d) dark blue on white
17. 17.Which of these requests is fair? (a) quiz app → microphone (b) calculator → location (c) timer → your photos (d) calling app → contacts
18. 18.🧪 How many of these test cases pass?
    🎟️ Rule: a ticket costs 50 for children under 8, and 100 for everyone else.
    function price(age) {
      if (age <= 8) {
        return 50;
      }
      return 100;
    }
    Test 1: price(10) → expected 100
    Test 2: price(13) → expected 100
    Test 3: price(5) → expected 50
19. 19.🧪 What is the actual result of a test? (a) the test’s number (b) what the app really does (c) what we hope for (d) the app’s name
20. 20.🔍 Which is the odd one out? (a) a sleep tracker (b) a times-table quiz (c) a water reminder (d) a step counter
21. 21.⚙️ Which line does the processing (works out the answer)?
    line 1: let km = 14; // typed by the user
    line 2: let metres = km * 1000;
    line 3: show(metres); (a) line 1 (b) line 2 (c) line 3
22. 22.🗒️ Version 1 of a homework planner must be ready in 11 days. How many days are left for extras after the must-haves?
    add a homework task: 4 days
    set a due date: 4 days
    see tasks by day: 3 days
23. 23.👥 A school app has 260 students, 90 teachers and 70 parents as users. How many more students than teachers are there?
24. 24.♿ What should every icon-only button have for screen readers? (a) a long animation (b) a text label (c) a bright colour (d) a sound
25. 25.True or false: a pop-up message is an output. (a) False (b) True
26. 26.🧩 In an app, what is tap to Send? (a) data (b) a button (c) a screen (d) an input
27. 27.True or false: the user presses Save is a text event. (a) True (b) False
28. 28.👆 The user types Aman in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Hello, " + nameBox.text + "!";
    }; (a) Aman (b) Hello! (c) Hello, Aman! (d) Hello, nameBox.text!
29. 29.♿ Our rule: text is at least 16 px. Which text on this screen is too small?
    Title: 17 px
    Body text: 14 px
    Caption: 25 px
    Menu: 26 px (a) Title (b) Body text (c) Menu (d) Caption
30. 30.👆 The user types Aman in nameBox and taps the button 1 time. What does the label show?
    button.onTap = function () {
      label.text = "Hi, " + nameBox.text + "!";
    }; (a) Hi, nameBox.text! (b) Hi! (c) Hi, Aman! (d) Aman
31. 31.🔀 What number does this shop app show?
    let total = 830;
    if (total > 500) {
      total = total - 50;
    }
    show(total);
32. 32.🧪 Who else should try an app before release? (a) the app icon (b) only the coder (c) nobody (d) real users
33. 33.True or false: working out a tip is processing. (a) True (b) False
34. 34.Which of these happens at the build stage? (a) put it on an app store (b) share the download link (c) sketch the screens (d) add the buttons
35. 35.True or false: a racing challenge is a health app. (a) False (b) True
36. 36.🐞 This code has a bug. What number SHOULD it show, if every line did what its comment says?
    line 1: let stars = 43; // start at 43
    line 2: stars = stars - 4; // add 4
    line 3: stars = stars * 2; // double it
    line 4: show(stars); // show it
37. 37.🔘 Is this good or poor button design: a clear word like Save? (a) good design (b) poor design
38. 38.True or false: a wireframe is a quick sketch. (a) False (b) True
39. 39.📊 Survey: which problem bugs you most? How many students voted in all?
    losing water bottles: 5 votes
    forgetting birthdays: 18 votes
    no quiet study place: 4 votes
40. 40.🔢 In a photo-post flow, which comes first: “write a caption” or “add a filter”? (a) write a caption (b) add a filter

Free app development lessons, practice and worksheets at talentjr.in/app-development-for-students