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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