| 16. | Positive ion formation is |
| a. | Exothermic |
| b. | Endothermic |
| c. | no energy |
| d. | neutral |
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Answer: (b).Endothermic
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| 17. | Modern method for separation of isotopes is |
| a. | laser separation |
| b. | chromatography |
| c. | ionization |
| d. | X-ray |
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Answer: (a).laser separation
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| 18. | Formation of negative ion is |
| a. | Exothermic |
| b. | Endothermic |
| c. | energy less |
| d. | neutral |
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Answer: (a).Exothermic
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| 19. | In new spectrometers each ion hits a |
| a. | Detector |
| b. | ionizer |
| c. | collector |
| d. | graph |
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Answer: (a).Detector
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| 20. | Reactant which controls amount of products is |
| a. | deficient reactant |
| b. | limiting reactant |
| c. | excess reactant |
| d. | none of these |
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Answer: (b).limiting reactant
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