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Assistant Papers PPSC – 2021 Multiple Questions and Answers.
| 31. | Least polluted gas in the Atmosphere ? | ||
| A. | Hydrogen | ||
| B. | Nitrogen | ||
| C. | Oxygen | ||
| D. | Carbon | ||
| 32. | At the Center of the Earth Mass of Body due to gravity will ? | ||
| A. | infinite | ||
| B. | zero | ||
| C. | same as that on the surface of the earth | ||
| D. | half of that on the surface of the earth | ||
| 33. | Which of the sphere hotter with comparison to other ? | ||
| A. | Northern Southern | ||
| B. | North Pole | ||
| C. | South Pole | ||
| D. | Equator | ||
| 34. | Which Gas is Called Laughing Gas ? | ||
| A. | Nitrous oxide | ||
| B. | Nitrogen dioxide | ||
| C. | Dinitrogen trioxide | ||
| D. | Sulfur trioxide | ||
| 35. | Formic Acid is obtained from ? | ||
| A. | Snake | ||
| B. | Ants | ||
| C. | Frogs | ||
| D. | Scorpions | ||
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