Question


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| 1. | Soap | $C_6 H_5 OH$ |
| 2. | Cement | $CaSO_4 \cdot 2 H_2 O$ |
| 3. | Fertilizers | NaOH |
| 4. | Gypsum | RCC |
| 5. | Phenol | NPK |
| 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 |
| 1. Length | a) | Litre |
| 2. Mass | b) | Seconds |
| 3. Time | c) | Kilogram |
| 4. Volume of liquid | d) | metre |

| 1. 1000 gm | a) | 1 kilo meter |
| 2. 1000 milligram | b) | 1 ton |
| 3. 1000 kilogram | c) | 1 gram |
| 4. 1000 metre | d) | 1 kilogram |
| 1. | Biotic factor | Terrestrial Ecosystem |
| 2. | Sewage | Land pollution |
| 3. | Fertilizers | Air pollution |
| 4. | Desert | Water Pollution |
| 5. | Smoke | Animals |



