Question


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| 1. | Galileo Galilei | (a) | Earth is at the centre |
| 2. | Heliocentric theory | (b) | Dr. A.P.J. Abdul Kalam |
| 3. | Geo-centric theory | (c) | Jupiter – bound space probe |
| 4. | ‘ Missile man of India | (d) | Sun is at the centre |
| 1. | Valency | Fe |
| 2. | Neutral particle | Proton |
| 3. | Iron | Electrons in the outermost orbit |
| 4. | Hydrogen | Neutron |
| 5. | Positively charged particle | Monovalent |
| 1. | Displacement | Knot |
| 2. | Light travelling through vacuum | Geometric centre |
| 3. | Speed of ship | Metre |
| 4. | Centre of gravity of geometrical shaped objects | Larger base area |
| 5. | Stability | Uniform velocity |
| 1. | Rectilinear propagation | Primary source of light |
| 2. | Plane Mirror | Non-luminous object |
| 3. | Fire fly | Periscope |
| 4. | The Moon | Pinhole camera |
| 5. | Wide light source | Spectrum of light |
| 6. | Regular reflection | luminous object |
| 7. | The sun | Penumbra |
| 8. | Band of seven colors | Glossy surface |
| Rabies | Salmonella |
| Cholera | Yellow Urine |
| Tuberculosis | Cramps in legs |
| Hepatitis | Hydrophobia |
| Typhoid | Mycobacterium |
| Hepatitis | (a) | Citrus fruits |
| Nightblindness | (b) | Vomiting |
| Bleeding gums | (c) | smoking |
| Heart attack | (d) | Poor light |
| Pollen | (a) | anther |
| Ovule | (b) | protection |
| stamen | (c) | Powdery |
| Sepal | (d) | Seed |

| 1. | Nylon | (a) | Artificial silk |
| 2. | PET | (b) | Artificial wool |
| 3. | Rayon | (c) | Parachute |
| 4. | Acrylic | (d) | Polyester |