| 1. | Compass | Maximum magnetic strength |
| 2. | Attraction | Like poles |
| 3. | Repulsion | Opposite poles |
| 4. | Magnetic poles | Magnetic needle |
| 1. | Compass | Magnetic needle |
| 2. | Attraction | Opposite poles |
| 3. | Repulsion | Like poles |
| 4. | Magnetic poles | Maximum magnetic strength |
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| 1. | Ear | Cardiac muscle |
| 2. | Skeletal System | Flat muscle |
| 3. | Diaphragm | Sound |
| 4. | Heart | Air sacs |
| 5. | Lungs | Protection of internal organs |
| 1. | Vitamin A | a. Rickets |
| 2. | Vitamin B | b. Night blindness |
| 3. | Vitamin C | c. Sterility |
| 4. | Vitamin D | d. Beri beri |
| 5. | Vitamin E | e. Scurvy |
| First-generation computer | Artificial Intelligence |
| Second-generation computer | Integrated Circuit |
| Third generation computer | Vacuum tubes |
| Fourth-generation computer | Transistor |
| Fifth-generation computer | Micro processor |
| 1. | Biotic factor | Terrestrial Ecosystem |
| 2. | Sewage | Land pollution |
| 3. | Fertilizers | Air pollution |
| 4. | Desert | Water Pollution |
| 5. | Smoke | Animals |
| Srl. no. | A | B | C |
| i | Separation of visible undesirable components | Water mixed with chalk powder | Magnetic Separation |
| ii | Separation of heavier and lighter components | Sand and water | Decantation |
| iii | Separation of insoluble impurities | Iron impurities | Filtration |
| iv | Separation of magnetic components from non-magnetic components | Rice and stone | Hand-picking |
| v | Separation of solids from liquids | Husk and paddy | Winnowing |
| 1. | Mountain | Monocot |
| 2. | Desert | Branches |
| 3. | Stem | Dry place |
| 4. | Photosynthesis | Himalayas |
| 5. | Fibrous root | Leaves |
| 1. | Control center | Energy producer |
| 2. | Food producer (Plant cell) | Mitochondria |
| 3. | Gate of the nucleus | Nucleus |
| 4. | Gate of the cell | Chloroplasts |
| 5. | Energy producer | Nuclear membrane |
| 1 | Average kinetic energy of molecule | i. | Borosilicate |
| 2 | Pyrex glass | ii. | Railway Tracks |
| 3 | Thermal expansion | iii. | Burning |
| 4 | Heat transfer SamacheerKalvi.Guide | iv. | Temperature |
| 5 | Kerosene | v. | 20^(@)C to 10^(@)C |
