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Every Day Science Section-4 Multiple Questions and Answers.
| 21. | Which gas is used in the preparation of soft drinks? | ||
| A. | Oxygen | ||
| B. | Carbon dioxide | ||
| C. | Nitrogen | ||
| D. | Proteins | ||
| 23. | Coke is made by heating coal in the absence of air at: | ||
| A. | 700 C | ||
| B. | 900 C | ||
| C. | 1300 C | ||
| D. | 1500 C | ||
| 24. | In blood, the percentage of water is: | ||
| A. | 75% | ||
| B. | 85% | ||
| C. | 90% | ||
| D. | 100% | ||
| 25. | As the temperature of ice rises, the ice melts and its density: | ||
| A. | Decreases | ||
| B. | Remain constant | ||
| C. | Increases | ||
| D. | Remain Increase | ||
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