E-PolyLearning

16. Positive ion formation is
a. Exothermic
b. Endothermic
c. no energy
d. neutral
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Answer: (b).Endothermic

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

18. Formation of negative ion is
a. Exothermic
b. Endothermic
c. energy less
d. neutral
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Answer: (a).Exothermic

19. In new spectrometers each ion hits a
a. Detector
b. ionizer
c. collector
d. graph
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Answer: (a).Detector

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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