Question


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| 1. | Spiral galaxy | (a) | Globular clusters |
| 2. | Elliptical galaxy | (b) | Bar-shaped structure |
| 3. | Irregular galaxy | (c) | Young, hot stars |
| 4. | Barred spiral galaxy | (d) | Abundant amount of gas, dust |
| 1. | Rubber | (a) | Erect |
| 2. | Greased paper | (b) | Inverted |
| 3, | Real image | (c) | Opaque medium |
| 4. | Virtual image | (d) | Translucent medium |
| i. | Clinical thermometer | A form of energy |
| ii. | Normal temperature of human body | 100°C |
| iii. | Heat | 37°C |
| iv. | Boiling point of water | 0°C |
| v. | Melting point of water | Kink |

| Pellagra | (a) | Water |
| Allergies | (b) | Folic acid |
| Rabies | (c) | Pollen |
| Anaemia | (d) | skin |
| 1. | Cell | used to open or close a circuit |
| 2. | Switch | safety device used in electric circuit |
| 3. | Circuit | A complete path for the flow of an electric current |
| 4. | Miniature circuit Breaker | Reset by hand, circuit becomes complete once again |
| 5. | Fuse | A device which converts chemical energy into electrical energy |
| A | B |
| Nylon | Thermoplastic |
| PVC | Thermosetting plastic |
| Bakelite | Fibre |
| Teflon | Wood pulp |
| Rayon | Non-stick cookwares |