Question
| i | Apples | (a) | Oxygen |
| ii | Fatty acids | (b) | Browning |
| iii | Acid rain | (c) | Rancidity |
| iv | Solid camphor | (d) | Air pollution |
| i | Apples | (a) | Oxygen |
| ii | Fatty acids | (b) | Browning |
| iii | Acid rain | (c) | Rancidity |
| iv | Solid camphor | (d) | Air pollution |
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| 1. | Earthworm | (a) | Flapping |
| 2. | Cockroach | (b) | Setae |
| 3. | Birds | (c) | Slithering |
| 4. | Snake | (d) | Legs |
| Barometer | reduce friction |
| Increasing area of contact | Atmospheric pressure |
| Decreasing area of contact | cause of friction |
| Lubricants | increases friction |
| Irregular surface | decreases friction |
| 1. | Conduction | (a) | liquids and gases |
| 2. | Convection | (b) | Poor conductor |
| 3. | Radiation | (c) | Solids |
| 4. | Snow | (d) | Vacuum |
| i | The ray that enters the transparent medium | (a) | Violet |
| ii | The ray that comes out from a transparent medium into air | (b) | 0^(@) |
| iii | Speed of light in vacuum | (c) | Emergent ray |
| iv | The angle of incidence for normal incidence | (d) | Incident ray |
| v | The colour that deviates the most | (e) | $3\times10^{8}m/s$ |
| 1. | Solid to liquid | (a) | Condensation |
| 2. | Liquid to gas | (b) | Deposition |
| 3. | Gas to solid | (c) | Melting |
| 4. | Gas to liquid | (d) | Vaporization |
| 1. | Bulb | (a) | Conductor |
| 2. | Electroplating | (b) | Insulator |
| 3. | Pure water | (c) | Heating effect of current |
| 4. | Salt solution | (d) | Chemical effect of current |
| 1. | Specific heat capacity | (a) | Dewar bottle |
| 2. | Calorimeter | (b) | Lavoisier and simon |
| 3. | Vacuum flask | (c) | $JKg ^{-1} K^{-1}$ |
| 4. | Ice – calorimeter | (d) | Heat capacity |
| i | Probiotic | (a) | Kuru |
| ii | Preservation | (b) | Methanogen |
| iii | Prion | (c) | Curd |
| iv | Biogas | (d) | Sugar |
| i | Ammonia | (a) | Nickel |
| ii | Dalda | (b) | Fermentation |
| iii | Alcoholic beverages | (c) | Biocatalysts |
| iv | Yeast | (d) | Urea |