The answer grid runs from question 1 through question 32 — Page 166, Lesson 195

This is the answers page for the Chapter 2 questions — the mass and balance questions. So I'm not going to read out the answer key to you; that's for you to check your own work against. What I want to do instead is walk you through the structure of what you've just been tested on, so you can see how the answers fit together. The answer grid runs from question 1 through question 32. Let me read you the sequence of correct answers so you can mark your paper: question 1 is d, 2 is a, 3 is d, 4 is d, 5 is c, 6 is b, 7 is a, 8 is b, 9 is c, 10 is c, 11 is b, 12 is d, 13 is c, 14 is c, 15 is b, 16 is a, 17 is b, 18 is a, 19 is a, 20 is b, 21 is a, 22 is a, 23 is d, 24 is c, 25 is b, 26 is b, 27 is a, 28 is b, 29 is b, 30 is a, 31 is d, and 32 is c. Now, what I really want you to take away from this is not just the letters — it's the pattern of what those questions were probing. Look at the distribution. You've got a heavy cluster of 'a' and 'b' answers in the middle section, questions 13 through 22. That tells me those questions were testing your ability to distinguish between two closely related concepts — the kind of question where you have to decide whether a statement is true or false, or whether a particular effect increases or decreases a quantity. The 'd' answers at questions 1, 3, 4, 12, and 23 are the classic "all of the above" or "none of the above" style questions, where you had to check every option before committing. And the 'c' answers scattered through — questions 5, 9, 10, 13, 14, 24, 32 — those are usually the calculation questions, where you had to work through a numerical problem and the answer fell out as the third option. Here's the professional point I want you to hold onto. In the real exam, you won't get a pattern like this. The answer letters are randomised. So the skill you're building by checking these answers is not pattern recognition — it's the ability to look at a question, identify which principle it's testing, and then apply that principle cleanly. When you mark question 7 as 'a', I want you to ask yourself: why is it 'a' and not 'b'? What was the distinguishing feature that made that the correct choice? That's the habit that will carry you through the actual DGCA or EASA exam. The answers here are just the key to the lock — the real learning is in understanding why each key fits its lock. So go ahead and mark your answers against this grid, and when you're ready, we'll move on to the next chapter.