Question
| 1. | Crooke’s tube | (a) | Negatively charged particles |
| 2. | Cathode rays | (b) | Cathode ray tube |
| 3. | Proton | (c) | Positively charged particles |
| 4. | Anode rays | (d) | $1.6 \times 10^{-24} g$ |
| 1. | Crooke’s tube | (a) | Negatively charged particles |
| 2. | Cathode rays | (b) | Cathode ray tube |
| 3. | Proton | (c) | Positively charged particles |
| 4. | Anode rays | (d) | $1.6 \times 10^{-24} g$ |
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| i | Pyricularia | (a) | Mosses |
| ii | Cercospora | (b) | Blast disease |
| iii | Protonema | (c) | Tikka disease |
| iv | Dryopteris | (d) | Fem |
| 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. | Oxygen | (a) | Carbon dioxide |
| 2. | Azote | (b) | Nitrogen |
| 3. | Solvay process | (c) | Vital life |
| 4. | Gun powder | (d) | No life |
| i | Alveoli | (a) | Yeast |
| ii | Ethanol | (b) | Gaseous exchange |
| iii | Diffusion | (c) | Amino acids |
| iv | Protein | (d) | Perfume |
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
| Barometer | reduce friction |
| Increasing area of contact | Atmospheric pressure |
| Decreasing area of contact | cause of friction |
| Lubricants | increases friction |
| Irregular surface | decreases friction |
| 1. | Heat | (a) | Good absorber |
| 2. | Temperature | (b) | Form of energy |
| 3. | Black surface | (c) | Insulators |
| 4. | Rubber, cork | (d) | Measure of hotness or coldness |
| 1. | Nitrogen | (a) | Acid rain |
| 2. | $CO _2$ | (b) | Global warming |
| 3. | Melting of glaciers | (c) | Volcanic gases |
| 4. | Corrosion of bridges | (d) | Aerated drinks |