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Chapter-1 - 11th - Basic Concepts Preparation Multiple Questions and Answers.
| 11. | The mass of one mole of electron is: | ||
| A. | 1.008 mg | ||
| B. | 0.184 mg | ||
| C. | 0.54 mg | ||
| D. | 0.054 mg | ||
| 12. | 27 g of Al will react with how much mass of O2 to produce Al2O3: | ||
| A. | 8 g of oxygen | ||
| B. | 16 g of oxygen | ||
| C. | 32 g of oxygen | ||
| D. | 24 g of oxygen | ||
| 13. | The number of moles of NO2 which contains 16 g of oxygen: | ||
| A. | 0.25 | ||
| B. | 0.5 | ||
| C. | 1 | ||
| D. | 1.5 | ||
| 14. | The volume occupied by 2.0 g of Ne at STP: | ||
| A. | 2.24 dm3 | ||
| B. | 22.4 dm3 | ||
| C. | 1.12 dm3 | ||
| D. | 112 cm3 | ||
| 15. | A sample in the ionization chamber of mass spectrometer is ionized by: | ||
| A. | Electrons | ||
| B. | Proton | ||
| C. | Neutron | ||
| D. | Nucleus | ||
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