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Every Day Science Section-4 Multiple Questions and Answers.
| 6. | Which gas is commonly used in balloons and airships? | ||
| A. | Hydrogen | ||
| B. | Helium | ||
| C. | Carbon | ||
| D. | Henry | ||
| 7. | A slow-running pendulum clock can be speeded up b: | ||
| A. | Increasing the length of rod | ||
| B. | Increasing the weight of the bob | ||
| C. | Reducing the length of the rod | ||
| D. | Helium | ||
| 9. | The approximate intensity level of the sound which can cause damage to the ear drum is: | ||
| A. | 20dB | ||
| B. | 60dB | ||
| C. | 100dB | ||
| D. | 50dB | ||
| 10. | Fuse wire is made of: | ||
| A. | 63% tin and 37% lead | ||
| B. | 63% lead and 37% tin | ||
| C. | 63% tin and 37% aluminum | ||
| D. | 63% tin and 39% aluminum | ||
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