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P3 General Studies: Hygiene and Infectious Diseases (Paper 2 (intermediate))
Tutor Prep Guide · conductors and insulators, power and electricity cost, series and parallel circuits, fuses and earth protection, and safe habits at home
P3 General Studies: Hygiene and Infectious Diseases (Paper 2 (intermediate))
Paper two moves on to vaccines, wound care, keeping food cold, the incubation period, and the difference between cleaning and disinfecting.
Direct answers For a percentage, write down the part and the whole, divide them, and then turn the decimal into per cent.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: P3 General Studies: Hygiene and Infectious Diseases |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationWhat does a vaccine do?
- FoundationHow should a grazed wound be treated?
- FoundationWhy should food be kept in a fridge?
- IntermediateWhat is the incubation period?
- IntermediateWhat is the difference between cleaning and disinfecting?
- IntermediateWhat should you do if you cough and have no tissue?
- ChallengeA class of 48 pupils has 12 pupils with chickenpox. What percentage of the class is that?
- ChallengeA 500 millilitre bottle of disinfectant has 125 millilitres used. What percentage of the original amount is left?
- ChallengeSix glasses of water are drunk each day. How many glasses is that in one week?
- Error redoSomeone says a vaccine means you can never catch any disease again. What is wrong with that?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | It lets the body build up protection first, so later infection is less likely. | A vaccine lets the body meet the germ in advance, so it can fight back faster when the real germ arrives. |
| 2 | Rinse it with clean water, then cover it with clean gauze. | Rinsing removes dirt and germs, and covering stops more germs getting into the wound. |
| 3 | Low temperature slows down germ growth. | Germs multiply quickly when warm, so keeping food cold slows them down and makes it last longer. |
| 4 | The time between catching the germ and the first symptoms. | There may be no symptoms during the incubation period, yet the germs can still be passed on. |
| 5 | Cleaning removes dirt, while disinfecting kills germs. | Cleaning before disinfecting works best, because dirt stops the disinfectant reaching the germs. |
| 6 | Cover your mouth and nose with the inside of your elbow. | The inside of the elbow touches few things, so fewer germs are left on handles and other surfaces. |
| 7 | 25.0 | Twelve divided by forty-eight gives 0.25, that is 25.0 per cent. |
| 8 | 75.0 | The amount left is 375 millilitres, and 375 divided by 500 gives 0.75, that is 75.0 per cent. |
| 9 | 42 | Six times seven gives 42, and enough water helps the body resist germs. |
| 10 | A vaccine targets particular diseases only, and its protection fades with time. | Error to fix: one vaccine works only against one or a few germs, so other diseases still need preventing. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Then try paper three, using voltage and current to work out power and resistance.Tutor Registration →
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